Question

In square ABCD; A = (3, 4), B = (-2, 4) and C = (-2, -1). By plotting these points on a graph paper, find the co-ordinates of vertex D. Also, find the area of the square.

• A. $D=(3,1),Area=25sq.unit$
• B. $D=(3,1),Area=36sq.unit$
• C. $D=(3,-1),Area=25sq.unit$
• D. $D=(3,-1),Area=36sq.unit$

Answer 1

The correct option is C $D=(3,-1),Area=25sq.unit$

Plot the points, A, B and C. Join them using straight lines to complete the square. Hence D $=(3,-1)$.
On counting the number of unit squares inside the square ABCD, we get $25$.
Hence, area of the square ABCD $=25$ sq units