Question

The following is/are correct about congruent triangle EXCEPT (a) three sides are equal (b) three angles are equal (c) two sides and the included angie (d) two angles and a side ​

Answer 1

(b) three angles are equal.

Explanation:

In congruent triangles, corresponding sides and angles are equal. Therefore, (a) three sides are equal, (c) two sides and the included angle, and (d) two angles and a side are all correct statements about congruent triangles.

However, (b) three angles are equal is not correct. Congruent triangles have equal corresponding angles, but it doesn't mean that all three angles in one triangle are equal to all three angles in another triangle. It's possible for two triangles to be congruent even if only two angles are equal.