# Nagel point

From Encyclopedia of Mathematics

The point of intersection of the straight lines joining the vertices of a triangle to the points at which the opposite sides are tangent to the escribed circles (see Fig.). Named after Ch. Nagel (1836).

Figure: n066010a

#### Comments

#### References

[a1] | N.A. Court, "College geometry" , Barnes & Noble (1952) pp. 160 |

[a2] | M. Berger, "Geometry" , I , Springer (1987) pp. Sect. 10.13.30 |

**How to Cite This Entry:**

Nagel point. A.B. Ivanov (originator),

*Encyclopedia of Mathematics.*URL: http://www.encyclopediaofmath.org/index.php?title=Nagel_point&oldid=16670

This text originally appeared in Encyclopedia of Mathematics - ISBN 1402006098