# Proving Rectangles

## Graph Quadrilateral ABCD with vertices A(-1,2), B(0,-1), C(6,1), and D(5,4)

What evidence do you have that this is or isn't a parallelogram?

What evidence do you have that this is or isn't a rectangle?

## Graph Quadrilateral ABCD with vertices A(1,5), B(3,6), C(6,2), and D(4,1)

Is this shape graphed above a Quadrilateral? Is it a Parallelogram? Is it a Rectangle? SHOW YOUR WORK!

## Graph Quadrilateral ABCD with vertices A(-6,0), B(-5,3), C(1,1), and D(0,-2)

Is this shape graphed above a Quadrilateral? Is it a Parallelogram? Is it a Rectangle? SHOW YOUR WORK!