Four incenter lie on a circle in Bicentric quadrilateral

Let ABCD be a bicentric quadrilateral, O is center of circle (ABCD). Then Incenter of four triangles OAB,OBC,OCD,ODA lie on a circle

 

Đào Thanh Oai

 
Material Type
Activity
Tags
thebault  tangential  circle  quadrilateral  triangle  collinear  midpoints  perpendicular  dao  thanh  oai incircle reflection Show More…
Target Group (Age)
19+
Language
English (United Kingdom)
 
 
GeoGebra version
4.2
Views
1123
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