What is the perimeter of the polygon formed when the points A(-6,6) B(9,6) and C(9,-2) are graphed and connected with straight lines?
AB = sqrt [ (-6 - 9)^2 + (6 - 6)^2) ] = sqrt [ 15^2] = 15
BC = sqrt [ ((9- 9)^2 + ( -2 - 6)^2 ] = sqrt [ 64] = 8
AC = sqrt [ (-6 - 9)^2 + (-2 - 6)^2) ] = sqrt [ 15^2 +8^2] = sqrt [ 289] = 17
Perimeter = 15 + 8 + 17 = 40
Thank you!