Wolfram Demonstrations Project

If a triangle has altitudes

, and

, semiperimeter

, inradius

, and circumradius

, then

This Demonstration is based on:

"Problem 11330," The American Mathematical Monthly, 114(10), 2007 p. 925.

Contributed by: Jay Warendorff

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A Triangle Inequality Involving the Altitudes, Semiperimeter, Inradius, and Circumradius