(4, 5)'(9, 5) and (5,1) are three of a quadrilateral whose opposite sides are equal and parallel.there are three possibilities for the co-ordinates of the missing vertex.Find all three,and draw the three quadrilateral on a grid

Answer 1

one side is the horizontal line from (4,5) to (9,5). It is clearly 5 units long.

So, the other parallel side is also 5 units long, starting at (5,1)...