# Chapter 4: Corresponding Parts in Congruence

4-2 Some Ways to Prove Triangles Congruent (p. 122) Objective: I can use the SSS, SAS, ASA Postulates to prove triangles congruent. Postulate 12 SSS Postulate If three sides of one triangle are congruent to three sides of another triangle, then the triangles are congruent. A B L

R C Name the congruence. M Postulate 13 SAS Postulate If two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then the triangles are congruent. Y X

N J Z Name the congruence. K Postulate 14 ASA Postulate If two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the triangles are congruent.

F A O T R Name the congruence. Y

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