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Date: 2007-01-30 03:33:53Trigonometry Circles Angle Triangle Law of sines Altitude Incircle and excircles of a triangle Circumscribed circle Cyclic quadrilateral Geometry Triangle geometry Triangles | 5. Orthic Triangle. Let ABC be a triangle with altitudesAdd to Reading ListSource URL: euclid.ucc.ieDownload Document from Source WebsiteFile Size: 103,84 KBShare Document on Facebook |