2The Idea of a Congruence Two geometric figures with exactly the same size and shape.ACBDEF
3How much do youneed to know. . .. . . about two trianglesto prove that theyare congruent?
4Corresponding PartsIn Lesson 4.2, you learned that if all six pairs of corresponding parts (sides and angles) are congruent, then the triangles are congruent.BACAB DEBC EFAC DF A D B E C FABC DEFEDF