A parallelogram is a quadrilateral with both pairs of oposite sides parallel. The distance formula given above can be written as. When you are trying to prove a quadrilateral is a rectangle which method should you use.
M 5 So one pair of sides are parallel since both have slope 5.
And In the applet below a quadrilateral has been drawn on a coordinate plane. Determine whether each pair of lines through the given points below is parallel perpendicular or neither. It is also important to keep your algebra. This proves that it is a parallelogram because.