The midpoints of the sides BC, CA and AB of a `triangle ABC` are D(2,1), E(-5,7)and F-5, -5) respectively. Find the equations of the sides of `triangl
The midpoints of the sides BC, CA and AB of a `triangle ABC` are D(2,1), E(-5,7)and F-5, -5) respectively. Find the equations of the sides of `triangle ABC`.
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