Do these sides form a right triangle?
Do these these sides form a right triangle?
- 1 decade agoFavorite Answer
Square all the numbers in each set. For the first it will be 20^2, 99^2, and 101^2, or 400, 9801, and 10201. By the Pythagorean Theorem, the square of the two smaller numbers must add up to the square of the larger. For #1 it does - 400+9801=10201, so #1 is a right triangle.
Also, the square of the two smaller numbers must be less than the square of the third, or you can't make any sort of triangle.