Online Geometry Problems

Infographic Geometry Problem 1060: Triangle, Incircle, Incenter, Inscribed circle, Tangent, Angle. Level: High School, SAT Prep, College, Mathematics Education

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In a triangle ABC (see the figure below), the incircle of center I is tangent to BC, AC, and AB at D, E, and F, respectively. BI extended meets DE at G. Prove that angle C = 2 angle IFG.
 

Infographic Geometry problem: Triangle, Incircle, Incenter, Inscribed circle, Tangent, Angle
 

 



 

 

Home | SearchGeometry | Problems | All Problems | Open Problems | Visual Index | 10 Problems | 1051-1060 | Triangle | Incenter, incircle | Circle | Tangent Line | Angle | Angle Bisector | Email | Solution / comment | by Antonio Gutierrez
Last updated: Nov 15, 2014