How do you use the distance formula and slope formula to classify a quadrilateral?

See the distance formula to find the length of the sides ... opposite sides equal it could be a rectangle or parallelogram all sides equal, square or rhombus adjacent equal, kite and then the slope is used to check angles if the product of the 2 lines in - 1 the lines are perpendicular (right angle) the the slopes of 2 lines are the same the sides are parallel. hope