9-point circle and incircle/excircles

Given a triangle ABC and its orthocenter D, the nine-point circle is tangent to the incircle and excircles of the triangles ABC, ABD, BCD, ACD Dans un triangle A, B, C et son orthocentre D le cercle des neuf points est tangent au cercle inscrit et aux trois cercles exinscrits des triangles ABC, ABD, ACB, BCD

 

Ph_M

 
Material Type
Activity
Tags
triangle  incircle  excircles 
Target Group (Age)
19+
Language
English (United Kingdom)
 
 
GeoGebra version
4.4
Views
1373
Report a problem
 
 
© 2018 International GeoGebra Institute