1) Drag points B and/or C to create three different central angles and record your measures in the table below. Look for a relationship between the central angle measure and arc measure and try t fill in the last row of the table with the formula. Central Angle Arc Measure Measure 75 75 133 133 114 114 2) Describe the relationship between central angle measure and arc measure.
Angles in Circles
Angles within a circle are feasible to create with the help of different properties of the circle such as radii, tangents, and chords. The radius is the distance from the center of the circle to the circumference of the circle. A tangent is a line made perpendicular to the radius through its endpoint placed on the circle as well as the line drawn at right angles to a tangent across the point of contact when the circle passes through the center of the circle. The chord is a line segment with its endpoints on the circle. A secant line or secant is the infinite extension of the chord.
Arcs in Circles
A circular arc is the arc of a circle formed by two distinct points. It is a section or segment of the circumference of a circle. A straight line passing through the center connecting the two distinct ends of the arc is termed a semi-circular arc.
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