Answer:
to test if this is a right triangle, test the side lengths with the Pythagorean theorem
a^2 + b^2 = c^2
Explanation:
c is the hypothenuse, the longest side of a right triangle
a and b are the legs of the right triangle.
a = 16
b = 17
c = 26
16^2 + 17^2 = 26^2 ?
256 + 289 = 676?
545 ≠ 676
NO, this triangle is NOT a right triangle