Geometry Problems, Online Education

Geometry Problem 1211: Right Triangle, Altitude, Angle Bisector, 45 Degrees, Metric Relations, Area. Online High School, College

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Triangle ABC is right angled at B and BD is the altitude. DE and DF are angle bisectors of triangles ADB and BDC, respectively. Prove that  (1) Formula to prove; (2)Formula to prove 2; (3) Area of triangle DEF =Formula to prove 3.
This entry contributed by Sumith Peiris, Moratuwa, Sri Lanka.
 

Geometry problem 1211 Right Triangle, Altitude, Angle Bisector, 45 Degrees, Metric Relations, Area
 

 

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Geometry problem 1210

Geometry Problem 1210
Circle, Tangent Line, Secant, Chord, Collinear Points.

Geometry problem 1209

Geometry Problem 1209
Triangle, Circle, Excircle, Excenter, Circumcircle, Congruence.

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Last updated: May 9, 2016