The Angle Bisectors
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Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny  
A discussion of why the anglebisectors of a triangle meet at the incenter of the triangle, in several different ways, involving: cevians, the transitivity property of equality, axes of a 2line, altitudes and orthic triangles, and complex numbers.  


Levels:  High School (912), College 
Languages:  English 
Resource Types:  Web Interactive/Java 
Math Topics:  Triangles and Other Polygons 
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