Question

Plot the points A (4, 5), B (-1, 5), C (-1, -2) and D (4, -2) on a graph paper. Join AB, BC, CD and DA. Give a special name to the quadrilateral ABCD obtained. Also, find its area.

Answer 1

Since opposite sides are equal in length and sides are perpendicular to each other, the quadrilateral ABCD is a rectangle.
Also length of rectangle is $AB=CD=5units$
and breadth of rectangle is $AD=BC=7units$
So Area of the rectangle $=length\times breadth=5\times 7=35squnits$