Q. 93.6( 10 Votes )

# The figure obtain

The Midpoint Theorem states that the segment joining two sides of a triangle at the midpoints of those sides is parallel to the third side and is half the length of the third side.

Join AC, RP and SQ

In ∆ABC,

P is midpoint of AB and Q is midpoint of BC

By midpoint theorem,

PQ AC and PQ = 1/2AC …(1)

Similarly,

In ∆DAC,

S is midpoint of AD and R is midpoint of CD

By midpoint theorem,

SR AC and SR = 1/2AC …(2)

From (1) and (2),

PQ SR and PQ = SR

PQRS is a parallelogram

ABQS is a parallelogram

AB = SQ

PBCR is a parallelogram

BC = PR

AB = PR [ BC = AB, sides of rhombus]

SQ = PR

diagonals of the parallelogram are equal

Hence, it is a rectangle.

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