Understanding Parallelograms: Definitions, Properties, and Problems

geometry Study online at https://quizlet.com/_6skqdh 1. Figure ABCD is a parallelogram. What is the value of p? 6 2. Figure LMNO is a parallelogram. What is the value of x? 20 3. Figure CDEF is a parallelogram. Which measures are correct? Check all that apply. n = 10 CF = 59 FE = 42 4. Figure ABCD is a parallelogram. What are the measures of angles B and D? A. B = 55°; D = 55° 5. Figure PQRS is a parallelogram. The expres- sions represent the measures of the angles in degrees. What is the value of x? 20 6. Figure JKLM is a parallelogram. The mea- sures of line segments MT and TK are shown. What is the value of y? 7 7. The parallelogram shown represents a map of the boundaries of a natural preserve. Walking trails run from points A to C and from points B to D. The measurements shown represent miles. What is the sum of the lengths of the two trails? 16 miles 8. A plot of land is in the shape of a parallelo- gram with the dimensions shown. 68 feet 1 / 20

geometry Study online at https://quizlet.com/_6skqdh How many feet of fencing are needed to enclose the lot? 9. Figure ABCD is a parallelogram. What are the measures of angles B and C? B. B = 65°; C = 115° 10. Figure ABCD is a parallelogram. What is the perimeter of ABCD? 44 unit 11. What is the perimeter of parallelogram LMNO? 80 12. The perimeter of parallelogram ABCD is 46 inches. What is DA? 4 13. What is the measure of angle O in parallelo- gram LMNO? 105 14. In parallelogram ABCD, what is DC? 13 15. In parallelogram PQSR, what is PQ? 9 16. Given: AB E CD and AD E BC Prove: ABCD is a parallelogram. What is the missing reason in step 3? SSS congruency theorem 17. In parallelogram LMNO, what are the values of x and y? x = 55, y = 14 18. What is the measure of angle L in parallelo- gram LMNO? m L = 40 19. Which best explains if quadrilateral WXYZ can be a parallelogram? 2 / 20

geometry Study online at https://quizlet.com/_6skqdh WXYZ is not necessarily a parallelogram because it is unknown if WC = CY. 20. Given: AD E BC and AD % BC Prove: ABCD is a parallelogram. What is the missing reason in step 6? CPCTC 21. Consider the diagram and proof below. Given: WXYZ is a parallelogram, ZX E WY Prove: WXYZ is a rectangle What is the missing reason in Step 7? consecutive s in a ± are sup- plementary 22. A rectangle has a width of 9 units and a length of 40 units. What is the length of a diagonal? 41 units 23. Rectangle PQRS is shown with its diago- nals, PR and QS. What type of triangle is ³STR? isosceles triangle 24. Figure ABCD is a parallelogram. If ABCD is also a rhombus, what must be the value of x? 13 25. What is the approximate side length of the square? 4.2 units 26. Rhombus LMNO is shown with its diago- nals. The length of LN is 28 centimeters. What is the length of LP? 14 27. 13 3 / 20

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geometry Study online at https://quizlet.com/_6skqdh ABCD is a square. What is the length of line segment DC? 28. A quilt piece is designed with four congru- ent triangles to form a rhombus so that one of the diagonals is equal to the side length of the rhombus. Which measures are true for the quilt piece? Check all that apply. a = 60° The perimeter of the rhom- bus is 16 inches. The length of the longer di- agonal is approximately 7 inches. 29. The figure shown is a rhombus. Which equation is true regarding the angles formed by the diagonals and sides of the rhombus? x + y = z 30. The perimeter of the rectangle is 146 units. What is the length of the longer side? 45 units 31. Rectangle PQRS is shown with its diago- nals, PR and QS. What type of triangle is ³STR? isosceles triangle 32. TREC is a rectangle. What is the length of ET? 34 units 33. Which statements are true of all squares? Check all that apply. The diagonals are perpen- dicular. The diagonals are congruent to each other. The diagonals bisect the ver- tex angles. The diagonals bisect each other. 4 / 20

geometry Study online at https://quizlet.com/_6skqdh 34. The figure is a square. Its diagonals meet to form four right angles. What is the approxi- mate value of x? 5.7 35. The figure is a parallelogram. One diagonal measures 28 units. No, it is not a rectangle be- cause the sides of the paral- lelogram do not meet at right angles. 36. Consider kite ABCD. What are the values of x and y? x = 5, y = 22 37. Right trapezoid WXYZ is shown. What is the measure of angle WXY? 107° 38. If KM is drawn on this quadrilateral, what will be its length? 18 units 39. A kite has a perimeter of 70 centimeters. One of the shorter sides measures 16 cen- timeters. What are the lengths of the other three sides? 16 centimeters, 19 centime- ters, and 19 centimeters 40. Which quadrilateral is a kite? B 41. Given: JKLM is an isosceles trapezoid, KL % JM Prove: KM E JL What is the missing reason in step 4? base angles theorem 42. A kite has a perimeter of 108 feet. One of the longer sides measures 30 feet. What are the lengths of the other three sides? 24 feet, 24 feet, 30 feet 43. 5 / 20

geometry Study online at https://quizlet.com/_6skqdh If quadrilateral PQRS is a kite, which state- ments must be true? Check all that apply. QP E QR PM E MR QPS E QRS 44. The diagram shows quadrilateral MNPQ. What is the length of line segment MQ? 11 units 45. A town planner wants to build two new streets, Elm Street and Garden Road, to con- nect parallel streets Maple Drive and Pine Avenue. In trapezoid EFGH, EF E HG. What is the mea- sure of the angle between Elm Street and Pine Avenue? 72° 46. Which statement proves that quadrilateral JKLM is a kite? LM = JM = 3 and JK = LK = . 47. In the diagram, WZ = square root 26 The perimeter of parallelogram WXYZ is + 8 units. 48. The vertices of a quadrilateral in the coordi- nate plane are known. How can the perime- ter of the figure be found? Use the distance formula to find the length of each side, and then add the lengths. 49. In the diagram, DG % EF. What additional information would prove that DEFG is an isosceles trapezoid? DE E GF 50. In the diagram, KL = 2 square root 2 , LM = square root 5, and MN = square root 2 . What is the perimeter of isosceles trapezoid KLMN? C. 3 square root 2 + 2 square root 5 units 51. In the diagram, AB = 10 and AC = 2 square root 10. What is the perimeter of ³ABC? D. 20 + 2 square root 10 units 6 / 20

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geometry Study online at https://quizlet.com/_6skqdh 52. HIJK is a parallelogram because the mid- point of both diagonals is which means the diagonals bisect each other. (1,0) 53. Which statement proves that parallelogram KLMN is a rhombus? The slope of KM is 1 and the slope of NL is -1. 54. Which statement proves that the diagonals of square PQRS are perpendicular bisectors of each other? The midpoint of both diago- nals is 4 1/2 , 5 1/2 the slope 55. What is the perimeter of ³LMN? 8 + square root 10 units 56. Given: ABCD is a kite. Prove: BD bisects AC. What is the missing reason in step 5? corresponding parts of con- gruent triangles are congru- ent 57. Kite ABCD represents a softball field that is being built. If AC = 48 meters, what is the perimeter of the field? 140 meters 58. Maggie puts together two isosceles trian- gles so that they share a base, creating a kite. Each leg of the upper triangle mea- sures 41 inches and each leg of the lower one measures 50 inches. If the length of the base of both triangles measures 80 inches, what is the length of the kite's shorter diagonal? 39 inches 59. What is the perimeter of square ABCD? B. 4 square root 37 60. Figure ABCD is a square. Prove BD E AC. What is the missing reason in the proof? all sides of a square are con- gruent 7 / 20

geometry Study online at https://quizlet.com/_6skqdh 61. The diagram shows the shape of a plot of land that Maria will use for her garden. She needs to know the length of each side so she can buy fencing. What is the length of line segment FJ? 42 feet 62. A 15-meter by 23-meter garden is divid- ed into two sections. Two sidewalks run along the diagonal of the square section and along the diagonal of the smaller rec- tangular section. What is the approximate sum of the lengths of the two sidewalks, shown as dotted lines? 38.2 m 63. Rhombus LMNO is shown with its diago- nals. Angle MLO measures 112°. What is the mea- sure of angle MLP? 56 64. What is the perimeter of parallelogram WXYZ? B. 2 square root 5 + 2 square root 17 units 65. Square ABCD and isosceles triangle BUC are drawn to create trapezoid AUCD. What is the measure of angle DCU? 135o 66. The perimeter of a rhombus is 28 centime- ters. What is the length of each side of the rhombus? 7 67. The diagonals of a parallelogram are con- gruent. Which could be the parallelogram? rectangle 68. 8 8 / 20

geometry Study online at https://quizlet.com/_6skqdh In parallelogram WXYZ, WY = 12 in., XZ = 16 in., WX = 10 in., and XY = 9 in. What is the length of line segment MX? 69. Given: RT E TV and ST E TU Prove: RSVU is a parallelogram. ³RTS E ³VTU and ³RTU E ³VTS 70. Jacob is cutting a tile in the shape of a par- allelogram. Two opposite angles have mea- sures of (6n 70)° and (2n + 10)°. What are the two different angle measures of the parallelogram-shaped tile? 50° and 130° 71. In circle D, which is tangent to the circle? AB 72. Which equation can be used to find the mea- sure of ? m:EHG + 80 + 35 = 360 73. What does CDE most specifically describe? a major arc 74. Segments AC and BD are diameters of circle O. What is the measure ADE of ? 253 75. In circle D, which is a secant? GH 76. Which is true regarding chords and diame- ters of circles? Both chords and diameters have two endpoints on a cir- cle. Diameters must inter- sect the center of a circle. 77. In circle O, SU is a diameter. What is m:ST? 130 78. What is the measure of CED? 212 79. In circle O, RT and SU are diameters. If m:RV = m:VU, what is mVU? 64 9 / 20

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geometry Study online at https://quizlet.com/_6skqdh 80. The measure of BAC is 240. What is the ratio of the measure of the major arc to the mea- sure of the minor arc? 2:1 81. Line segment XY is tangent to circle Z at point U. If the measure of UV is 84°, what is the mea- sure of ? 42 82. Angle KJL measures (7x - 8)o. Angle KML measures (3x + 8)o. What is the measure of arc KL? 40 83. Given: Circle M with inscribed angel KJL and congruent radii JM and ML Prove: m angel MJL = 1/2 { m: KL} What is the missing reason in step 8? substitution property 84. In circle V, angle WXZ measures 30°. Line segments WV, XV, ZV, and YV are radii of circle V. What is the measure of WUX in circle V? 120 85. Line segment GJ is a diameter of circle L. Angle K measures (4x + 6)°. What is the value of x? 21 86. Line EF is tangent to circle G at point A. If the measure of angel CAE is 95°, what is the measure of CBA ? 190 87. Line segment BD is a diameter of circle E. What is the measure of BC ? 78 88. In circle D, angle ADC measures (7x + 2)°. Arc AC measures (8x - 8)°. What is the measure of angel ABC ? 36 89. What is the measure of arc EF in circle H? 41 10 / 20

geometry Study online at https://quizlet.com/_6skqdh 90. Given: Circle O with diameter LN and in- scribed angle LMN Prove: LMN is a right angle. What is the missing reason in step 5? inscribed angle theorem 91. RT and GJ are chords that intersect at point H. If RH = 10 units, HT = 16 units, and GH = 8 units, what is the length of line segment HJ? 20 92. What is the length of line segment XZ? 16 93. AX and EX are secant segments that inter- sect at point X. What is the length of DE? 3 units 94. Circle C is inscribed in triangle QSU. What is the perimeter of triangle QSU? 40 95. Line segment BA is tangent to the circle. What is the length of line segment BA? Round to the nearest unit. 98 96. The circle is inscribed in triangle AEC. Which are congruent line segments? Check all that apply. EF and ED CB and CD 97. What is the length of line segment SV? 16 units 98. Point O is the center of the circle. What is the perimeter of quadrilateral DOBC 28 units 99. Line segment QP is tangent to the circle. What is the length of line segment QP? Round to the nearest unit. 20 units 100. SU and VT are chords that intersect at point R. What is the length of line segment VT? 13 units 11 / 20

geometry Study online at https://quizlet.com/_6skqdh 101. What is the area of the shaded sector of the circle? B. 27 r units2 102. Line segment WX is the radius of circle X, and line segment ZY is the radius of circle Y. Points W, X, C, Y, and Z are all on line segment WZ. What is the area of circle C, which passes though points W and Z? 324 r units 103. The measure of central angle XYZ is 1.25 radians. What is the area of the shaded sector? 40 104. The diagram shows one way to develop the formula for the area of a circle. Pieces of a circle with radius r are rearranged to create a shape that resembles a parallelogram. Since the circumference of the circle can be represented by 2À r, and the area of a paral- lelogram is determined using A = bh, which represents the approximate area of the par- allelogram-like figure? C. 105. Point G is the center of the small circle. Point X is the center of the large circle. Points G, H, and X are on line segment GX. What would be the area of a new circle that has line segment GX as its diameter?` 49 106. Fiona draws a circle with a diameter of 14 meters. What is the area of Fiona's circle? 49 107. The measure of central angle RST is radi- ans. What is the area of the shaded sector? 8 12 / 20

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geometry Study online at https://quizlet.com/_6skqdh 108. Which statements are true about circle Q? Check all that apply. The ratio of the measure of central angle PQR to the measure of the entire circle is 1/8. The area of the shaded sec- tor depends on the length of the radius. The area of the shaded sec- tor depends on the area of the circle. 109. The smallest of the three circles with center D has a radius of 8 inches and CB = BA = 4 inches. What is the sum of the areas of all three circles? 464 110. In circle V, r = 14ft. What is the area of circle V? 196 111. Points E, F, and D are on circle C, and an- gle G measures 60°. The measure of arc EF equals the measure of arc FD. EFD E EGD ED = FD mFD = 120° 112. Major arc JL measures 300°. Which describes triangle JLM? equilateral 113. Line segment ON is perpendicular to line segment ML. What is the length of chord ML? 24 units 114. 40° 13 / 20

geometry Study online at https://quizlet.com/_6skqdh Angle G is a circumscribed angle of circle E. Major arc FD measures 280°. What is the measure of angle GFD? 115. Angle BCD is a circumscribed angle of cir- cle A. What is the measure of minor arc BD? 100° 116. Angle X is a circumscribed angle of circle V. Which name best describes figure VWXY? square 117. Points A, B, C, and D lie on circle M. Line segment BD is a diameter. What is the measure of angle ACD? 67.5 118. What is the measure of circumscribed X? 90 119. What is the measure of angle COA? 160 120. Points N, P, and R all lie on circle O. Arc PR measures 120°. How does the measure of angle RNQ relate to the measure of arc PR? Angle RNQ is equal in mea- sure to arc PR. 121. Which point is on the circle centered at the origin with a radius of 5 units? Distance formula: (x2 - x1)2 + (y2-y1)2 A. 2, 21 122. Mrs. Culland is finding the center of a circle whose equation is x2 + y2 + 6x + 4y - 3 = 0 by completing the square. Her work is shown. x2 + y2 + 6x + 4y - 3 = 0 x2 + 6x + y2 + 4y - 3 = 0 (x2 + 6x) + (y2 + 4y) = 3 (x2 + 6x + 9) + (y2 + 4y + 4) = 3 + 9 + 4 (x + 3)2 + (y + 2)2 = 42, so the center is (-3, -2). 14 / 20

geometry Study online at https://quizlet.com/_6skqdh 123. What is the radius of a circle whose equa- tion is x2 + y2 + 8x - 6y + 21 = 0? 2 124. Which equation represents a circle with a center at (-4, 9) and a diameter of 10 units? (x + 4)2 + (y - 9)2 = 25 125. Which equation represents a circle with a center at (-3, -5) and a radius of 6 units? (x + 3)2 + (y + 5)2 = 36 126. The center of a circle represented by the equation (x + 9)2 + (y 6)2 = 102 is . (-9,6) 127. In the diagram, a circle centered at the ori- gin, a right triangle, and the Pythagorean theorem are used to derive the equation of a circle, x2 + y2 = r2. If the center of the circle were moved from the origin to the point (h, k) and point P at (x, y) remains on the edge of the circle, which could represent the equation of the new circle? (x - h)2 + (y - k)2 = r2 128. Which explains how to find the radius of a circle whose equation is in the form x2 + y2 = z? The radius is the square root of the constant term, z. 129. What is the center of a circle whose equa- tion is x2 + y2 + 4x - 8y + 11 = 0? (-2, 4) 130. Does the point (2,6 ) lie on the circle shown? Explain. D. No, the distance from (0, 0) to (2,6 ) is not 3 units. 131. Which graph represents the equation y2 = -4x? A 132. A parabola has a vertex at (0,0). The focus of the parabola is located on the positive x-axis. the negative part of the x-axis 15 / 20

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geometry Study online at https://quizlet.com/_6skqdh Which part of the graph will the directrix pass through? 133. A parabola has a vertex at (0,0). The equa- tion for the directrix of the parabola is x = -4. In which direction does the parabola open? right 134. A parabola can be represented by the equa- tion y2 = -x. What are the coordinates of the focus and the equation of the directrix A 135. A parabola can be represented by the equa- tion x2 = -20y. What are the coordinates of the focus of the parabola? (0,-5) 136. The focus of a parabola is located at (0,-2). The directrix of the parabola is represented by y = 2. Which equation represents the parabola? x2 = -8y 137. A parabola has a vertex at (0,0). The focus of the parabola is located on the positive y-axis. In which direction must the parabola open? up 138. Which equation represents the parabola shown on the graph? x2 = 6y 139. A parabola, with its vertex at (0,0), has a focus on the negative part of the y-axis. Which statements about the parabola are true? Check all that apply. The directrix will cross through the positive part of the y-axis. The equation of the parabola could be x2 = -1/2 y. 140. A parabola is represented by the equation x2 = 4y. (0,1) 16 / 20

geometry Study online at https://quizlet.com/_6skqdh What are the coordinates of the focus of the parabola? 141. If line segment AB measures approximately 8.6 units and is considered the base of par- allelogram ABCD, what is the approximate corresponding height of the parallelogram? Round to the nearest tenth. 4.8 units 142. What is the area of triangle QRS? 7 143. What is the area of triangle GHJ? 6 square units 144. If line segment BC is considered the base of triangle ABC, what is the corresponding height of the triangle? 1.6 units 145. What is the area of parallelogram ABCD? 13 146. Which expression can be used to find the area of triangle RST? (8 4) - 1/2 (10 + 12 + 16) 147. What is the area of triangle ABC? 3 148. What is the area of triangle LMN? 4 square units 149. What is the area of parallelogram ABCD? 20 square units 150. Michael is finding the area of parallelogram ABCD. To do this, he follows the steps in the table. To solve the problem using these steps, what are the dimensions of the rectangle he should draw? 4 units by 4 units 151. How do the areas of the parallelograms compare? The area of parallelogram ABCD is equal to the area of parallelogram EFGH. 152. 5.4 units 17 / 20

geometry Study online at https://quizlet.com/_6skqdh If line segment RU is considered the base of parallelogram RSTU, what is the corre- sponding height of the parallelogram? 153. Payton cut out two shapes, as shown, that she will later put together to resemble a house. What is the total area of the two shapes 21 square units 154. What is the area of triangle ABC? 7 155. A hole the size of a photograph is cut from a red piece of paper to use in a picture frame. What is the area of the piece of red paper after the hole for the photograph has been cut? 47 square units 156. A kite has vertices at (2, 4), (5, 4), (5, 1), and (0, -1). What is the approximate perimeter of the kite? Round to the nearest tenth. 16.8 units 157. A company designs a logo using a kite fig- ure around the letter t. The logo is 12 centimeters wide and 16 cen- timeters tall. What is the area of the logo? 96 sq. cm 158. The area of the trapezoid is 40 square units. What is the height of the trapezoid? 5 159. Trapezoid ABCD is graphed in a coordinate plane. What is the area of the trapezoid? 24 square units 160. Kite WXYZ is graphed on a coordinate plane. 16.2 units 18 / 20

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geometry Study online at https://quizlet.com/_6skqdh What is the approximate perimeter of the kite? Round to the nearest tenth. 161. What is the area of the rhombus? 24 162. A kite is inscribed in a square with a side length of 9 units. What is the area of the kite? 40.5 square units 163. The area of rhombus ABCD is 72 square units. EC = 8 units and DB = x - 1. What is the value of x? 10 164. Figure ABCD is a kite. The area of ABCD is 48 square units. The length of line segment BD is 8 units. What is the length of AC? 12 units 165. In the kite, AC = 10 and BD = 6. What is the area of kite ABCD? 30 square units 166. Which statements are true about the regular polygon? Check all that apply. Each interior angle mea- sures 108°. All of the angles are congru- ent. The sum of the measures of the interior angles is 180(5 - 2)°. 167. Which is a correct description of the poly- gon? It is a convex pentagon be- cause it has five sides and none of the sides would ex- tend into the inside of the polygon. 19 / 20

geometry Study online at https://quizlet.com/_6skqdh 168. What is the value of x? 8 169. What type of polygon is shown? convex hexagon 170. What type of polygon is shown? concave heptagon 171. What is the value of x? 130° 172. Which polygon has an interior angle sum of 1080°? A 173. Which polygon has an interior angle sum of 900°? D 174. Which statements are true about polygons? Check all that apply. The sides of a polygon are segments that intersect ex- actly two other segments, one at each endpoint. If all of the sides of a con- vex polygon are extended, none of them will contain any points that are inside the polygon. 175. What is the sum of the measures of the interior angles of a 12-gon? 1800 20 / 20

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