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Question

In a triangle ABC,the medians BE and CF intersect at G.Prove that ar( BCG)=ar(AFGE).

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Solution

ANSWER:
Figure
CF is median of △ABC.
⇒ar(△BCF) = 1/2(△ABC)
.....(1)
Similarly, BE is the median of △ABC,
⇒ar(△ABE) = 1/2(△ABC)
.....(2)
From (1) and (2) we have
ar(△BCF) = ar(△ABE)
⇒ar(△BCF) - ar(△BFG) = ar(△ABE) - ar(△BFG)
⇒ar(∆BCG) = ar(AFGE)

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