Question

A triangle has sides with lengths of 59 millimeters, 86 millimeters, and 97 millimeters. Is it a

right triangle?

Answer 1

No because 59 square (3,481) plus 86 square(7396) is equal to 10,877 and not 97 square (9,409)
To be a right triangle , the longer side square must be equal to the addition of the two other sides squared ( squared separately)

Answer 2

If it has a 90 degree angle