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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*** 25. 2 A.I.A 26. 4 Corresponding Angles 27. 2 A.E.A
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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*** • 25. 2 A.I.A • 26. 4 Corresponding Angles • 27. 2 A.E.A • 28. 4 Vertical Angles
Properties of Parallel Lines We will learn about the corresponding angles postulate to help us prove other theorems
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.
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 5 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.
Bonus Problem • Solve for x and y. • Don’t do a proof
Homework • Page 152 # 1-4, 9, 10, 22, 15, 16, 26