CK-12 Geometry - Second Edition

http://www.ck12.org Chapter 1. Basics of Geometry

33.m^6 ADC= 130 ◦

34.m^6 ADC= ( 16 x− 55 )◦

35.m^6 ADC= ( 9 x− 80 )◦

36.WritingWrite a paragraph about why the degree measure of a straight line is 180, the degree measure of a

right angle is 90, etc. In other words, answer the question, “Why is the straight line divided into exactly 180

degrees and not some other number of degrees?”

Review Queue Answers

1.

−→

AB, a ray

2.XY= 3 ,Y Z= 38
a− 6 + 3 a+ 11 = 41
4 a+ 5 = 41