Draw an Equilateral Triangle ABC and draw an other Equilateral Triangle DEF inside the ABC such that the Apex of DEF intersects the mid-point of the triangle ABC. Then remove the bottom portions of DEF to the apex of DEF and the Apex of ABC. This creates two more Equilateral Triangles A, mid-point, B and A, mid-point, C. This creates two Equilateral side Triangles.
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