7. The parallel lines at the right are cut by a transversal. Find the value of x. a. Angles 1 and 2 are corresponding angles, m21 = 45°, and m2 = (x + 25)". b. Angles 3 and 4 are alternate interior angles, m23 = 2x², and m24 = 80°.

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
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7. The parallel lines at the right are cut by a transversal.
Find the value of x.
a. Angles 1 and 2 are corresponding angles, m21 = 45°,
and m2 = (x + 25)°.
b. Angles 3 and 4 are alternate interior angles, m23 = 2x,
and m24 = 80°.
8. Describe a method you could use to find the value of x in the
figure at the right without using a protractor.
Transcribed Image Text:7. The parallel lines at the right are cut by a transversal. Find the value of x. a. Angles 1 and 2 are corresponding angles, m21 = 45°, and m2 = (x + 25)°. b. Angles 3 and 4 are alternate interior angles, m23 = 2x, and m24 = 80°. 8. Describe a method you could use to find the value of x in the figure at the right without using a protractor.
Classify each pair of angles as alternate interior, alternate
exterior, or corresponding. (Examples 1 and 2)
1. 2 and 24
3/4
7/8
2. 24 and 25
5/6
3In the flag shown at the right, line a is parallel to
line b. If m21 = 150°, find m24 and m27. Justify
your answers. (Example 3)
Refer to the figure at the right. Line s is parallel to line t,
m22 is 110° and mZ11 is 137°. Find each given angle measure.
Justify your answer. (Example 4)
4. m27
3
11 12
5. m28
6. m23
Transcribed Image Text:Classify each pair of angles as alternate interior, alternate exterior, or corresponding. (Examples 1 and 2) 1. 2 and 24 3/4 7/8 2. 24 and 25 5/6 3In the flag shown at the right, line a is parallel to line b. If m21 = 150°, find m24 and m27. Justify your answers. (Example 3) Refer to the figure at the right. Line s is parallel to line t, m22 is 110° and mZ11 is 137°. Find each given angle measure. Justify your answer. (Example 4) 4. m27 3 11 12 5. m28 6. m23
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