Construct a triangle ABC, given :

Usual notations in triangle

A,B,C vertices or angles, a,b,c = sides opposite to A,B,C (that is a = BC etc)
ha altitude from vertex A, Ha foot of that altitude. ha = AHa
ma median from vertex A, Ma midpoint of side BC (opposite to A). ma = AMa
O = circumcenter, H = orthocenter, G = centroid, I = incenter


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