Question

which rule explains why these triangles are congruent? sss asa sas aas these triangles cannot be proven congruent.

Explanation:

Step1: Identify congruent parts

We see two angles ($\angle Q$ and $\angle T$) and the included - side ($QS = TS$) are congruent.

Step2: Recall congruence rules

ASA (Angle - Side - Angle) rule states that if two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, the triangles are congruent.

Answer:

ASA