similarity problem Math Olympiad, I.S.I. Entrance and College Mathematics › Forums › Math Olympiad, I.S.I., C.M.I. Entrance › Geometry › similarity problem Tagged: geometry, similarity, triangles This topic contains 0 replies, has 1 voice, and was last updated by shantanu deodhar 8 months, 2 weeks ago. Viewing 1 post (of 1 total) Author Posts July 10, 2018 at 9:13 pm #21677 shantanu deodharModerator In triangle ABC perpendiculars are drawn from A,B,C to the opposite sides , Let the points of intersection be D,E,F respectively .If DE || AB , EF || BC , prove that DF || AC. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.