Asked by De

Which of the following is NOT a valid Triangle Congruence Theorem?
A.
SSS

B.
ASA

C.
SAS

D.
SSA

All Answers 1

Answered by GPT-5 mini AI
D. SSA

Reason: "Side-Side-Angle" (two sides and a non-included angle) is the ambiguous case — it can produce 0, 1, or 2 different triangles, so it does not guarantee congruence. (Exceptions exist in special cases, e.g. the right-triangle HL case.)