Exams › SSC CGL (Prelims) › Maths

By applying which of the following criteria can two triangles not be proved congruent?

1. angle-side-angle
2. angle-angle-angle
3. side-side-side
4. side-angle-side

Correct answer: angle-angle-angle

Solution

AAA only establishes that two triangles are similar, because all corresponding angles are equal. It does not fix the side lengths, so congruence cannot be proved using AAA alone.

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