Four circle and a triangle problems

A triangle and Four circle problems. Let ABC be a triangle, and any two circle, construct three circle tangent two sides and tangent circle respectively at A1,B1,C1. Prove that AA1,BB1,CC1 are concurrent

 

Đào Thanh Oai

 
Resource Type
Activity
Tags
collinear  concurrent  midpont  perpective  reflections  theorem 
Target Group (Age)
19+
Language
English (United States)
 
 
GeoGebra version
4.2
Views
943
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