triangle abc and triangle bcd have vertices A(-6, -7), B(-6, 4), C(2, -7), D(8, 4) what is the area in square units of trapezoid ABCD which is formed by the two triangles?
Try this solution/explanation: According to the attached graph AC||BD, AB⊥BD and AB⊥AC. |BD|=14; |AB|=11; |AC|=8. All the details are in the attachment.
