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Example: RENT is a rectangle. Its diagonals meet at O. Find x, if OR = 2x +
                  4 and OT = 3x + 1.

                  Solution: OT is half of the diagonal TE, OR is half of the diagonal RN.

                   Diagonals are equal here.  So, their halves are also equal.

                   Therefore 3x + 1 = 2x + 4

                                      or x = 3

                  Square: A square is a rectangle with equal sides.

                  Properties of Square:

                       All sides are equal.
                       All angles are right angle.
                       The diagonals
                         (i)     bisect one another (square being a parallelogram)
                         (ii)    are of equal length (square being a rectangle) and
                         (iii)   are perpendicular to one another.









































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