- AAAS
- BASA
- CSAS
- DSSA
Step-by-Step Solution
Two sides and a non-included angle can fit two different triangles, so SSA is not a congruence rule.
Answer: D) SSA
Which of these is NOT a valid congruence rule for triangles?
Class 9SAS, ASA and AAS CongruenceGeometry — Triangles
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More Class 9 SAS, ASA and AAS Congruence practice
Using the marked equal parts, by which rule is △ABC ≅ △PQR?Here ∠A = ∠P, ∠B = ∠Q and BC = QR. Name the congruence rule.In △ABC and △DEF, AB = DE, ∠A = ∠D and AC = DF, as marked. If BC = 9 cm, how long is EF?Why does AAA (three equal angles) not prove two triangles congruent?Why is SSA (two sides and a non-included angle) not a congruence rule?