Question

मे द्वार कोशिकाएँ होती

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Answer 1

matlab

In △ADC, by mid point

theorem, SR∥AC,SR=21(AC)

Similarly PQ∥AC,PQ=21(AC)

⇒PQ∥RS, similarly PS∥QR

⇒ opposite sides parallel

⇒PQRS is a parallelogram

As △ALS∼△AOD (AA similarity)

⇒ODSL=ADAS=21

⇒ Area of rectangle SL×R

=SL×L×=21(OD)(2AC)

{LX×=SR=2AC}=21(ar△ACD)

⇒ Area of PQRS=21(arACD)

+21(arACB)=21(arABCD)



Answer 2

i hope this will help you