Go Geometry Problems

Online Geometry Problem 21: Acute Triangle, Orthocenter, Circle, Diameter, Tangent, Collinear Points. Sketch, Software.

The drawing shows an acute triangle ABC with the orthocenter H. The tangents from A to the circle with diameter BC touch the circle at M and N. Prove that M, H, N are collinear (passing through the same straight line).
 


 


 


 


Sketch of problem 21 using iPad Apps.

Sketch of problem 21 using mobile apps. Acute Triangle, Orthocenter, Circle, Diameter, Tangent, Collinear Points, Sketch Software

See also:
Sketch problem 21, art 01
Original problem art 21


Related Topics

Home | SearchGeometry | Problems | All Problems | Open Problems | Visual Index | 10 Problems | Problems Art Gallery Art | 21-30 | Circles | OrthocenterDiameters | Collinear Points | Circle Tangent Line |  | By Antonio Gutierrez
Last updated: Dec 10, 2017

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