Online Geometry Problems, High School, College

 

Online Geometry Problem 658: Triangle, Altitudes, Diameter, Circle, Angles. Level: High School, Honors Geometry, College, Mathematics Education

Geometry problems 651-660

The figure shows a triangle ABC with the altitudes BD and CE. The circle with diameter AC meets BD at F, and the circle with diameter AB meets CE extended at G and H. If the measure of angle CHF is 12 degrees, find the measure of angle AGF.
 

Triangle, Altitudes, Circles, Angle

 

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