Answer with explanation:
Quadrilateral has four sides.The Different types of Quadrilateral are:
1. Parallelogram----Opposite sides are Parallel.
2. Rhombus--Opposite sides are Parallel.
3. Square----Opposite sides are Parallel and adjacent sides are perpendicular.
4.Rectangle----Opposite sides are Parallel and adjacent sides are perpendicular.
5.Kite...............................
So, Slope formula is used to determine
Quadrilateral has either parallel or perpendicular sides.