Question

What side lengths equal a right triangle? choose all that apply

Answer 1

A, B and C.

Explanation:

If its a right triangle then c^2 = a^2 + b^2 where a, b and c are the 3 sides, c being the hypotenuse.

3^2 + 6^2 = 9 + 36 = 45

and (√45)^2 = 45 so the first set (A) is a right triangle.

2.5^2 + 6^2 = 6.25 + 36 = 42.25.

6.5^2 = 42.25 so B is also a right triangle.

C:

4^2 + 8^2 = 16 + 64 = 80

(√80)^2 = 80 so C is right-angled also.