Question

If the altitude of an isosceles right triangle has a length of x units, what is the length of one leg of the large right triangle in terms of x?

A) x units
B) x square root of 2 units
C) x square root of 3 units
D) 2x units

Answer 1

B) x square root of 2 units

Explanation:

Answer 2

check the picture below.

bear in mind that, if the right-triangle is an isosceles, is a 45-45-90 triangle, and if we split it from the "vertex" above perpendicular to the base, we end up with two more 45-45-90 triangles.