Question

which theorem is not a valid theorem to show that 2 triangles are congruent?
o asa
o aas
o ssa
o sas

Explanation:

ASA (Angle - Side - Angle), AAS (Angle - Angle - Side), and SAS (Side - Angle - Side) are valid congruence theorems for triangles. SSA (Side - Side - Angle) is not a valid congruence theorem because given two sides and a non - included angle, it can result in two different triangles.

Answer:

C. SSA