The mid points of the sides of a tria...

The mid points of the sides of a triangle `A B C` along with any of the vertices as the fourth point make a parallelogram of area equal to: `a r\ ( A B C)` (b) `1/2a r\ ( A B C)` `1/3a r\ ( A B C)` (d) `1/4\ a r\ ( A B C)`

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