Quadrilateral PQRS has vertices #P(-9, -1), Q(-2, 4), R(4, 3), #and #S(9,-4)#. How do you prove that PQRS is a trapezoid?
1 Answer
Mar 13, 2017
As
Explanation:
The slope of a line joining two points
Further the slopes of two parallel lines is equal.
Here slope of line joining
slope of line joining
As the slopes are equal,
and