Question

Find the perimeter of the triangle A(4,-2) B(9,-2) C(9,10)

Answer 1

30 units

Explanation:

A graph can help you see the lengths of the sides. This is a right triangle, so the length of the hypotenuse is found using the Pythagorean theorem:

5² +12² = b² = 169

b = √169 = 13

The perimeter is 5+12+13 = 30 units.