Question

plz answer this stepwise
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Answer 1

Answer:

see below

Step-by-step explanation:

Proof : 1) draw height AE from A onto BC

2) this height belongs to three triangles

3) since BD = DC ( AD median )..

4) ar ( ∆ ABD ) = 1/2 BD × AE......(1)

5) ar ( ∆ ADC ) = 1/2 DC × AE.....(2)

since (1) = (2) (from 3)

ar ( ∆ ABD ) = ar ( ∆ ADC )

hence proved