What is the area of this parallelogram? A parallelogram with vertices A, B, C, and D. Two perpendicular lines are drawn. One perpendicular line extends from vertex D to base A B, and the other perpendicular line extends from vertex B to base D C. The perpendicular lines divide the parallelogram into one rectangle and two triangles. The base of the rectangle is labeled 10 m and the base of one of the triangles is labeled 3 m. The height of the parallelogram is labeled 5 m.