Question

two triangles are considered congruent if they have:
a. one equal angle
b. two equal sides
c. three equal sides
d. similar shapes

Explanation:

Congruent triangles must have all corresponding sides and angles equal. The SSS (Side - Side - Side) congruence criterion states that if three sides of one triangle are equal to three sides of another triangle, the triangles are congruent. One equal angle (a) is not sufficient as it doesn't account for side lengths. Two equal sides (b) without information about the included angle or other sides/angles is not enough. Similar shapes (d) have the same shape but not necessarily the same size (congruent triangles must have the same size).

Answer:

C. Three equal sides