Question

DEF is a right traingle if the three sides are 24 40 and 17

Answer 1

If it is, then the squares of the short side and the medium side add up to the square of the longest side.

Let's check it out:

Square of the short side = 17² = 289

Square of the medium side = 24² = 576

These two squares add up to (289 + 576) = 865

Square of the longest side = 40² = 1,600

865 is not equal to 1,600.

So these three numbers do not make a right triangle.