Answers to Evens

1. Answers to Evens 2) I 4) IG 6) BGI 8) Definition of Congruent Triangles 10) a) KRO b) S, K, CPCTC c) KO, CPCTC, SK d) angle R, CPCTC, alt int angles are congruent 12) (7,2)

2. 4-2 Some Ways to Prove Triangles Congruent

3. Postulates to Prove 2 triangles are congruent • SSS • Side-Side-Side: If 3 sides of a ∆ are congruent to 3 sides of another ∆, then the ∆’s are congruent.

4. Postulates to Prove 2 triangles are congruent • SAS • Side-Angle-Side: If 2 sides and the included angle of a ∆ are congruent to 2 sides and the included angle of another ∆, then the ∆’s are congruent. Included: in between the 2 sides

5. Postulates to Prove 2 triangles are congruent • ASA • Angle-Side-Angle: If 2 angles and the included side of a ∆ are congruent to 2 angles and the included side of another ∆, then the ∆’s are congruent. Included: in between the 2 angles

6. Given: OK bisects angle MOT, OM = OTProve: ∆MOK = ∆TOK O 1 2 T M K

7. TOO • Page 124 #4-9 Answers: • Yes, ASA • Yes, SSS • Yes, SAS • No • No • No

8. Homework • Worksheet 4-2 • Flash Cards • SSS • SAS • ASA