+55 In Isoceles Triangle ABC, CA = CB. DEA is congruent to BEA, and DEA = BEA = 90 degrees. Circles M, N, O have radius 1 and are inscribed in ABC. What is the area of ABC?
+1641 An Isosceles Triangle ABC, CA = CB. DEA is congruent to BEA, and DEA = BEA = 90 degrees. Circles M, N, O have radius 1 and are inscribed in ABC. What is the area of ABC?
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Triangles DEA and BEA are 3-4-5 right-angled triangles!!!
Knowing that it's very easy to calculate the area of ΔABC.
[ABC] ≈ 21.429 square units 
