**Videos:**

(11:29) Congruent Triangles

(13:28) Other triangle congruence postulates

(7:28) Congruent Triangles

-(7:24) Why SSA is not a postulate

(5:46) Proof I

-(12:41) Proof II

(1:58) Basic Proof I

-(2:53) Basic Proof II

(8:15) Problem involving angle derived from square and circle

Worksheet: 12-Congruent Triangles