In this paper we prove that if P1,P2 are isogonal points in the triangle ABC , and if A1B1C1 and A2B2C2 are their ponder triangle such that the triangles ABC and A1B1C1 are homological (the lines AA1 , BB1 , CC1 are concurrent), then the triangles ABC and A2B2C2 are also homological.
Comments: 13 pages.
[v1] 13 Mar 2010
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