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Question

AB & CD are two equal chords of a circle with Centre O which intersect each other at the right angle at point P. If the perpendiculars from the centre to AB and CD meet them at M and N respectively, then MONP is a_______.


A

square.

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B

rectangle.

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C

kite.

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D

rhombus.

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Solution

The correct option is A

square.


Two equal chords in a circle are equidistant from the centre. Therefore OM = ON.

Join OP. Now OPM and OPN are congruent (RHS congruency)

OM=PN & ON= MP (cpct)

Hence, ON = PN = MP = MO

Moreover all angles are 900 . Therefore the figure OMNP forms a square as all sides are equal and angles are 900.


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