Triangles having the same incircle and circumcircle

Let ABC be a triangle and M a point on its circumcircle.
The tangents from M to the incircle cut the circumcircle in F and G.
Then FG is tangent to the incircle.


Property discovered by Marius Gheorghe Mateescu

See also
demonstrations.wolfram.com/TangentsToTheIncircleFromAPointOnTheCircumcircle

Average: 4 (1 vote)

Back to top