Question
The figure is formed using four identical isosceles triangles, DKG, DJE, EHF and FLG. DEFG is a square where H, J, K and L are midpoints of its sides. Given JM = MG, EN = NL and DG = 21 cm, find the total area of the shaded parts.
2 m

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The figure is formed using four identical isosceles triangles, DKG, DJE, EHF and FLG. DEFG is a square where H, J, K and L are midpoints of its sides. Given JM = MG, EN = NL and DG = 21 cm, find the total area of the shaded parts.