CK-12 Geometry-Concepts

http://www.ck12.org Chapter 3. Parallel and Perpendicular Lines

5. Are the lines parallel? Justify your answer.

For 6-10, what does the value ofxhave to be to make the lines parallel?

6. Ifm^61 = ( 6 x− 5 )◦andm^65 = ( 5 x+ 7 )◦.


7. Ifm^62 = ( 3 x− 4 )◦andm^66 = ( 4 x− 10 )◦.


8. Ifm^63 = ( 7 x− 5 )◦andm^67 = ( 5 x+ 11 )◦.


9. Ifm^64 = ( 5 x− 5 )◦andm^68 = ( 3 x+ 15 )◦.


10. Ifm^62 = ( 2 x+ 4 )◦andm^66 = ( 5 x− 2 )◦.

For questions 11-15, use the picture below.

11. What is the corresponding angle to^6 4?


12. What is the corresponding angle to^6 1?


13. What is the corresponding angle to^6 2?


14. What is the corresponding angle to^6 3?


15. Are the two lines parallel? Explain.