Question

The coordinates of the vertices of △ABC are A(-2,2), B(5,-3), and C(-4,-1). Identify the perimeter of △ABC. Round each side length to the nearest tenth before adding. HELP PLEASE!!

Answer 1

The distance from (-2,2) to (5,-3) is 8.6,  

(5,-3) to (-4,-1) is 9.2

(-4,-1) to (-2,2) is 3.6

add them all together to get the perimeter  

8.6+9.2+3.6= 21.4

so the perimeter is 21.4