Question

How do you find the perimeter of `triangleABC` with vertices A (-5, -2), B(-2,-2), and C(-5, 2)?

Answer 1

`12" units. "`

Explanation:

Using the Distance Formula,

`AB^2={(-5)-(-2)}^2+{(-2)-(-2)}^2=9`

`:. AB=3`

Similarly, `BC=5, and, AC=4`

Hence, `"the Perimeter="AB+BC+AC=12" units."`