MathDB

55

Part of 1966 IMO Shortlist

Problems(1)

Find the locus of vertices B that angles lie in the interval

Source:

9/30/2010
Given the vertex AA and the centroid MM of a triangle ABCABC, find the locus of vertices BB such that all the angles of the triangle lie in the interval [40∘,70∘].[40^\circ, 70^\circ].
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