Question

A triangle is graphed in the coordinate plane. The vertices of the triangle have coordinates (-5, 1), (1, 1), and (1, -7). What is the perimeter of the triangle?

Answer 1

add all the sides use distance formula to find each side

Answer 2

Remember, this is the distance formula: \[\sqrt{(x _{1}-x _{2})^{2} + (y _{1} - y _{2})^{2}}\]