Question

is the triangle with side lengths 5,7, and 9 units is an acute, right, or obtuse triangle

Answer 1

A triangle with side lengths 5, 7, and 9 units is an obtuse triangle. This is because the sum of the squares of two of the sides (5^2 + 7^2 = 25 + 49 = 74) is less than the square of the third side (9^2 = 81), according to the Pythagorean theorem. Therefore, the triangle is obtuse.