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Question

PQRS is a parallelogram. X and Y are midpoints of sides PQ and Rs respectively. If W and Z are points of intersection of SX & PY and XR and YQ respectively. Then show that arΔ YWZ = arΔXWZ

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Solution


X and Y are mid points of PQ and SR
PXRY is a parallelogram
XQYS is a parallelogram
PY || XR
WY || XZ …(1)
SX || YQ
WX || YZ …(2)
From (1) and (2)
XZYW is a parallelogram
WZ is the diagonal
Hence ar(ΔXZW)=ar(ΔYZW)
[ diagonal of ||gm divides into two congruent triangles]


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