Respuesta :

The slope formula can be used to prove a quadrilateral has parallel sides. This is made obvious when we remember that parallel lines have the same slopes.
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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.