1. 4.3 Proving Triangles are Congruent Side-Side-SideSide-Angle-Side

2. Side-Side-Side If three sides of one triangle are congruent to three sides of another triangle, then the triangles are congruent.

3. Side-Angle-Side If two sides and an angle between the sides are congruent in two different triangles, then the triangles are congruent.

4. Name the congruent Triangles

6. Prove

7. #1.#1.Given #2. #2. Vertical angles congruent #3.#3.Given #4.#4.S.A.S. (side-angle-side)

8. Prove #1.#1.Given #2.#2. Vertical angles congruent #3.#3.Given #4.#4.S.A.S. (side-angle-side)

9. Prove #1.#1.Given #2.#2. Vertical angles congruent #3.#3.Given #4.#4.S.A.S. (side-angle-side)

10. Prove #1.#1.Given #2.#2. Vertical angles congruent #3.#3.Given #4.#4.S.A.S. (side-angle-side)

11. Prove #1.#1.Given #2.#2. Vertical angles congruent #3.#3.Given #4.#4.S.A.S. (side-angle-side)

12. Prove #1.#1.Given #2.#2. Vertical angles congruent #3.#3.Given #4.#4.S.A.S. (side-angle-side)

13. Prove #1.#1.Given #2.#2. Vertical angles congruent #3.#3.Given #4.#4.S.A.S. (side-angle-side)

14. Can you prove What do you need to show Congruent

15. Given: Prove: #1.#1.Given #2., are #2.Def. of Prep. Lines right angles #3.#3.All Rt. Angles #4.#4.Reflexive #5.#5.S.A.S.

16. Given: Prove: #1.#1.Given #2., are #2.Def. of Prep. Lines right angles #3.#3.All Rt. Angles #4.#4.Reflexive #5.#5.S.A.S.

17. Given: Prove: #1.#1.Given #2., are #2.Def. of Prep. Lines right angles #3.#3.All Rt. Angles #4.#4.Reflexive #5.#5.S.A.S.

18. Given: Prove: #1.#1.Given #2., are #2.Def. of Prep. Lines right angles #3.#3.All Rt. Angles #4.#4.Reflexive #5.#5.S.A.S.

19. Given: Prove: #1.#1.Given #2., are #2.Def. of Prep. Lines right angles #3.#3.All Rt. Angles #4.#4.Reflexive #5.#5.S.A.S.

20. Given: Prove: #1.#1.Given #2., are #2.Def. of Prep. Lines right angles #3.#3.All Rt. Angles #4.#4.Reflexive #5.#5.S.A.S.

21. Given: Prove: #1.#1.Given #2., are #2.Def. of Prep. Lines right angles #3.#3.All Rt. Angles #4.#4.Reflexive #5.#5.S.A.S.

22. Given: Prove: #1.#1.Given #2., are #2.Def. of Prep. Lines right angles #3.#3.All Rt. Angles #4.#4.Reflexive #5.#5.S.A.S.

23. Given: Prove: #1.#1.Given #2., are #2.Def. of Prep. Lines right angles #3.#3.All Rt. Angles #4.#4.Reflexive #5.#5.S.A.S.

24. Homework Page 216 #6 -17, 23, 26

25. Homework Page 217- 219 #18 – 22, 24, 25, 28, 34, 35, 41 – 43