Check the picture below.
notice, is really just an 8x7 rectangle, with a triangle on top, the triangle has a base of 8, and a height of 2.
so, just get the area of the rectangle and the triangle, recall that A = 1/2 bh for a triangle, and sum them up, and that is the area of the polygon.
notice, is really just an 8x7 rectangle, with a triangle on top, the triangle has a base of 8, and a height of 2.
so, just get the area of the rectangle and the triangle, recall that A = 1/2 bh for a triangle, and sum them up, and that is the area of the polygon.