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Proof without Words: A Line through the Incenter of a Triangle

by Sidney H. Kung (University of North Florida)

This article originally appeared in:
Mathematics Magazine
June, 2002

Subject classification(s): Geometric Proof | Geometry and Topology
Applicable Course(s): 4.9 Geometry | 4.1 Introduction to Proofs

The author presents a visual proof that the line passing through the incenter of a triangle bisects the perimeter if and only if it bisects the area.

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