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Prove that the line joining the mid-poin...

Prove that the line joining the mid-points of the two sides of a triangle is parallel to the third side.

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Consider the following figure In this PQ is a line segment joining midpoint of AB and AC i.e `AP=PB` and `AQ=QC`
`(AP)/(PB)=1` and `(AQ)/(QC) =1` ...
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