# D, E and F are th

Given, D, E and F are mid-points od sides BC, CA and AB, respectively.

So, EF||BC and by Mid-Point Theorem,

DF||AC and DE||AB

Also, EF = BC, DE = AB and FD = AC

Since, ABC is an equilateral triangle,

AB = BC = AC

DE = EF = FD

Thus, all sides of ΔDEF are equal.

Hence, ΔDEF is an equilateral triangle.

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