Go Geometry Problems: Excenter

Online Geometry Problem 707: Triangle, Excenters, Angle Bisectors, Angle, Measurement. Level: High School, Honors Geometry, College, Mathematics Education

The figure shows a triangle ABC, AD meets BC at F and AE meets BC at G. D is the excenter of triangle ABG corresponding to BG and E is the excenter of triangle AFC corresponding to FC. If angle ADE + angle AED = 142 degrees, find angle ADB + angle AEC.
 

Triangle, Excenters, Angles, Problem
 

Home | SearchGeometry | Problems | All Problems | Open Problems | Visual Index | Problems Art Gallery | 701-710Triangles | Circles | Excenter | Angle Bisector | Angles | Email | Post a comment or solution | By Antonio Gutierrez