Question

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Answer 1

Step-by-step explanation:

1.ANSWER

Let ABC be a triangle and AD is the median of ΔABC

E is the mid point of AD

To prove : ar(BED)= 1/4 .ar(ABC)

In ΔABC,

ar(ABD)=ar(ACD) ___________ (1)

In ΔABD, BE is the median

ar(ABE)=ar(BED) __________ (2)

Now, ar(ABD)=ar(BED)= 2.

ar (BED) ______ (3)

ar(ABC)=ar(ABD)+ar(ACD)

ar(ABD)=2.ar(ABD) using (1)

ar(ABC)=2.2.ar(BED) - (2)

ar(ABC)= 4.ar (BED)

∴ar(BED)= 1/4 ar(ABC)

Hence proved.....

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