WCarnot's theorem (inradius, circumradius)
WConway circle theorem
WEqual incircles theorem
WEuler's theorem in geometry
WFeuerbach point
WHarcourt's theorem
WJapanese theorem for cyclic polygons
WKosnita's theorem
WLester's theorem
WMiquel's theorem
WMusselman's theorem
WPompeiu's theorem
WReuschle's theorem
WThales's theorem
WThébault's theorem
WVan Schooten's theorem