ABCD is a rectangle P and Q are points sides AD and AB respectively .Show that APOQ is a rectangle and find the ar(APOQ):ar(ABCD) when it is given that BR =1÷4 BC and DS=1÷4 CD
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Is there a diagram? Where is point O?
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Given: In rectangle ABCD, P,Q,R and S are points on sides AD,AB,BC and CD, respectively such that AQ=14AB, AP=14ADBR=14BC and DS=14CDTo prove:(1) APOQ is a rectangle(2) ar(APOQ):ar(ABCD)=?Proof:(1) As, AB∥CD and AB=CD (Opposite sides of rectangle ABCD)⇒AQ∥DS and AQ=DS [14AB=14CD, given]But this is a pair of opposite sides of quadrilateral ADSQSo, ADSQ is a parallelogram⇒AD∥QS (Opposite sides of parallelogram ADSQ)⇒AP∥QO .....(i)Also, AD∥BC and AD=BC (Opposite sides of rectangle ABCD)⇒AP∥BR and AP=BR [14AD=14BC, given]But this is a pair of opposite sides of quadrilateral APRBSo, APRB is a parallelogram⇒AB∥PR (Opposite sides of parallelogram ADSQ)⇒AQ∥PO .....(ii)From (i) and (ii),APOQ is a parallelogramSince, ∠A=90° (Each angle of rectangle is 90°)but this is an angle of parallelogram APOQHence, APOQ is a rectangle(2)ar(APOQ)=AQ×AP=14AB×14AD=116(AB×AD)=116ar(ABCD)⇒ar(APOQ)ar(ABCD)=116∴ ar(APOQ):ar(ABCD)=1:16
Given: In rectangle ABCD, P,Q,R and S are points on sides AD,AB,BC and CD, respectively such that AQ=14AB, AP=14ADBR=14BC and DS=14CDTo prove:(1) APOQ is a rectangle(2) ar(APOQ):ar(ABCD)=?Proof:(1) As, AB∥CD and AB=CD (Opposite sides of rectangle ABCD)⇒AQ∥DS and AQ=DS [14AB=14CD, given]But this is a pair of opposite sides of quadrilateral ADSQSo, ADSQ is a parallelogram⇒AD∥QS (Opposite sides of parallelogram ADSQ)⇒AP∥QO .....(i)Also, AD∥BC and AD=BC (Opposite sides of rectangle ABCD)⇒AP∥BR and AP=BR [14AD=14BC, given]But this is a pair of opposite sides of quadrilateral APRBSo, APRB is a parallelogram⇒AB∥PR (Opposite sides of parallelogram ADSQ)⇒AQ∥PO .....(ii)From (i) and (ii),APOQ is a parallelogramSince, ∠A=90° (Each angle of rectangle is 90°)but this is an angle of parallelogram APOQHence, APOQ is a rectangle(2)ar(APOQ)=AQ×AP=14AB×14AD=116(AB×AD)=116ar(ABCD)⇒ar(APOQ)ar(ABCD)=116∴ ar(APOQ):ar(ABCD)=1:16
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