Question

which theorem is not a valid theorem to show that two triangles are congruent? a. sas triangle congruence theorem b. ssa triangle congruence theorem c. asa triangle congruence theorem d. aas triangle congruence theorem

Explanation:

SAS (Side - Angle - Side), ASA (Angle - Side - Angle), and AAS (Angle - Angle - Side) are valid triangle congruence theorems. SSA (Side - Side - Angle) is not a valid congruence theorem because it can lead to two non - congruent triangles in some cases.

Answer:

B. SSA Triangle Congruence Theorem