Question

if two triangles are congruent, what is true of the two triangles?
each side of the first triangle has a congruent match on the second triangle
the two triangles are right triangles with congruent sides and angles
the two triangles are equilateral (all sides are the same length)
the two triangles are obtuse

Explanation:

Congruent triangles have all corresponding sides and angles equal. The first option correctly states that each side of the first triangle has a congruent match on the second triangle. The second option is incorrect as congruent triangles don't have to be right - angled. The third option is wrong because congruent triangles don't have to be equilateral. The fourth option is incorrect as congruent triangles don't have to be obtuse.

Answer:

Each side of the first triangle has a congruent match on the second triangle.