Question

A triangle has sides of lengths 4, 3, and 5. Is it a right triangle? Explain.

Answer 1

yes; 4² + 3² = 5²

Explanation:

Pythagorean theorem.

In a right triangle the square of the hypotenuse is equal to the sum of the squares of the other two sides. Hypotenuse is the longest side of the triangle.

4² + 3² = 5²

16 + 9 = 25

25 = 25