HW Solutions 11. JCD and EAB 13. CL, JE, FA, GB 21. Corresponding, Corresponding, Alternate Interior Angles, 22. Corresponding, Same-side Interior, Corresponding 23. Same-side interior, Corresponding, Alternate Interior*** A.I.A Corresponding Angles A.E.A Vertical Angles

Properties of Parallel Lines We will learn about the corresponding angles postulate to help us prove other theorems

Corresponding Angles Postulate

Now we can prove other theorems Let’s prove alternate interior angles are congruent.

Start off by drawing a transversal line intersecting two other line.

Same-Side Interior Angles Theorem.

Let’s figure out why same-side interior angles theorem is true. Prove <4+<5=180

Given line a and b are parallel Prove <1 and <8 are Supplementary

Alternate Exterior Angles With out doing a statement reason proof, talk to your group and describe how you might prove this true. It should only be a couple of steps and use angle 5 to help you out with this. 5

Look at the lasers If <1 = 4x+15 and <3 = 2x Solve for <1

Bonus Problem Solve for x and y. Don’t do a proof

Homework Page 152 # 1-4, 9, 10, 22, 15, 16, 17, 26

Test Averages Averages if you did the review, 66.9 or an 85% Overall average of the class was about a 61.9 or an 79% People who did the review also got a extra 5 points or an 92%