Question

5*yes, hlyes, sasyes, asano

Explanation:

Step1: Analyze HL (Hypotenuse - Leg)

HL is a congruence criterion for right - angled triangles. Let's assume the two right - angled triangles formed by the altitude. The hypotenuse (the equal sides of the original isosceles triangle) and the leg (the common altitude) are equal.

Step2: Check the congruence

Since we have two right - angled triangles, with hypotenuse equal (given as the two equal sides of the isosceles triangle) and leg equal (the common altitude), by HL (Hypotenuse - Leg) congruence criterion, the two right - angled triangles are congruent.

Answer:

yes, HL