
06606418
j
2016e.00667
Machiels, Luc
Pythagoras, Heron and Urquhart. (Pythagore, H\'eron et Urquhart.)
Quadrature 96, 4245 (2015).
2015
Quadrature, RevignysurOrnain
FR
G40
Pythagoras
Heron
Urquhart
inscribed circle
Summary: First, we recall a well known formula about the radius of the inscribed circle of a triangle. This formula provides easy proofs of Pythagoras, Heron and Urquhart theorems.