Question

1. according to the sss rule, two triangles are congruent if:

a. three sides are equal
b. two angles are equal
c. three angles are equal
d. two sides are equal

Explanation:

The SSS (Side - Side - Side) congruence rule for triangles states that if the three sides of one triangle are equal in length to the corresponding three sides of another triangle, then the two triangles are congruent. Option a says three sides are equal, which matches the SSS rule. Option b (two angles equal) is related to angle - based congruence or similarity, not SSS. Option c (three angles equal) is about similar triangles (AAA for similarity), not congruence via SSS. Option d (two sides equal) does not match the SSS rule which requires three sides.

Answer:

a. Three sides are equal