please prove the mid point theorem

Hi!

Mid point theorem states that " the line segment joining the mid-points of any two sides of a triangle is parallel to the third side and equal to half of it".

⇒ ED | | BC (Opposite sides of parallelogram are parallel)

**⇒ EF | | BC **

EF = DF (Proved)

⇒ EF + DF = ED = BC (Opposite sides of the parallelogram are equal)

⇒ EF + EF = BC

⇒ 2 EF = BC

Cheers!

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