Question

19 which triangle congruence theorem can be used to prove the triangles below congruent?

Explanation:

Step1: Identify triangle type

The triangles are right - angled.

Step2: Check congruence conditions

They have a common hypotenuse (marked equal) and one leg (the side between the right angle and the hypotenuse). By the HL (Hypotenuse - Leg) theorem for right - angled triangles, the two triangles are congruent.

Answer:

HL (Hypotenuse - Leg)