Question

I really need help with number 3

Answer 1

3.To find:

The right angle congruence theorem is used to prove that two triangles are congruent.

Solution:

In the given triangles, the corresponding hypotenuse and the corresponding angle are equal. So, the congruence used here is the Hypotenuse-Angle congruence that implies ABC is congruent to DEF.

Thus, the answer is Hypotenuse-Angle congruence.