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In Figure, A B C D is a parallelogram ...

In Figure, `A B C D` is a parallelogram and `E F C D` is a rectangle. Also `A L\ _|_D C`. Prove that
(i) `a r(A B C D=a r(E F C D)`
(ii) `a r\ ( A B C D)=D C` x `A L`

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RD SHARMA ENGLISH-AREA OF PARALLELOGRAMS AND TRIANGLES-All Questions
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  12. A D is one of the medians of a A B Cdot\ \ X is any point on A ...

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  13. In a A B C ,\ E is the mid-point of median A Ddot Show that a r\ (...

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  16. In Figure, A B C D E\ is a pentagon. A line through B parallel to A...

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  17. Show that the diagonals of a parallelogram divide it into four tria...

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