Feuerbach's Theorem

Author:V8frr

Feuerbach's theorem, which states that the nine-point circle is tangent to the three excircles of the triangle as well as its incircle. Drag A, B and C to see that this reamins invariable for any triangle.

New Resources

GeoGebra 3D Modeling Workshop (March 8 2024)
Function art 3D - waiting shed
Function Art 3D - Flower
Rovnoběžnost rovin
Isosceles Right Triangle

Discover Resources

equal areas 9
ιδιότητες παραλληλογράμμων Κατασκευή παραλληλογράμμων
Урок 1-2
Logo SPIUK
Properties of Circumcircle

Discover Topics

Continuity
Pie Chart or Circle Chart
Rational Numbers
Distributions
Sequences and Series