http://www.ck12.org Chapter 3. Parallel and Perpendicular Lines
For 17-20, find the values ofxandy.
17.
18.
19.
20.
Algebra ConnectionFor questions 21-25, use thepicture to the right. Find the value ofxand/ory.
21.m^61 = ( 4 x+ 35 )◦,m^68 = ( 7 x− 40 )◦
22.m^62 = ( 3 y+ 14 )◦,m^66 = ( 8 x− 76 )◦
23.m^63 = ( 3 x+ 12 )◦,m^65 = ( 5 x+ 8 )◦
24.m^64 = ( 5 x− 33 )◦,m^65 = ( 2 x+ 60 )◦
25.m^61 = ( 11 y− 15 )◦,m^67 = ( 5 y+ 3 )◦- Fill in the blanks in the proof below.