Points A(0,0), B(4,0), C(6,6) and D(2,6) are joined to form a figure. What is the figure ABCD called?
Parallelogram
ABCD is a quadrilateral with AB = CD and AB ∥ CD. A quadrilateral with opposite sides parallel and equal is known as parallelogram. It can't be a rectangle because the point D doesn't lie directly above point A.