Diagonals AC and BD of trapezium ABCD with AB||DC intersect at O.
Prove that ar(AOD) = ar(BOC).
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Two Triangles on the same base and between the same parallels are equal in area.
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Given: Diagonals AC and BD of a trapezium ABCD with AB || DC intersect each other at O.
To Prove:-
ar (AOD) = ar (BOC).
Proof:-
Here,△DAC and △DBC lie on the same base DC and between the same parallels AB and CD.
∴ ar(△DAC) = ar(△DBC)
ar(△DAC) − ar(△DOC) =ar(△DBC) − ar(△DOC)
[On subtracting ar(△DOC) from both sides]
ar(△AOD) = ar(△BOC)
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