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Question

In the adjoining figure PQRS is a rectangle. Identify the congruent triangles formed by the diagonals.
1368473_2654caac97b74b3cbc972d8847ad0c12.png

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Solution

In POQ and SOR
OP=OR(Diagonals of a rectangle bisect each other)
OQ=OS(Diagonals of a rectangle bisect each other)
PQ=SR(Diagonals are equal in length)
POQSOR by S.S.S. axiom of congruency
In POS and QOR
OP=OR(Diagonals of a rectangle bisect each other)
OQ=OS(Diagonals of a rectangle bisect each other)
PS=QR(Diagonals are equal in length)
POSQOR by S.S.S. axiom of congruency
In PSQ, PQR,QRS and PRS
PS=QR=QR=PS(Opposite sides of rectangle)
PQ=PQ=SR=SR(Opposite sides of the rectangle)
P=Q=R=S(Angles of a rectangle)
PSQPQRQRSPRS by S.A.S. axiom of congruency

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