Question

If B is the mid point of AC and C is the mid point of BD,where ABCD lie on a straight line say why AB = CD ?​

Answer 1

Answer:

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Given, B is the midpoint of AC

AB=BC ... (1)

and C is the midpoint of BD

BC=CD...(2)

i.e on adding (1) and (2)

ART

We get AB+BC=BC+CD

hence, AB=CD hence proved.

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Answer 2

Since B is the mid-point of AC,

AB=BC(1)

Since C is the mid-point of BD,

BC=CD(2)

From equation (1) and (2), we may find that AB=CD.

Hence proved

Hope it will help you