Copy of Feuerbach's Theorem

Author:Maggie Byrns, 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

Area of a Circle Illustrated
Area of a Trapezoid
The Gardener's Ellipse
Rectangle Construction Template (V2)
The Gardener's Circle

Discover Resources

kinematic on an inclined plane
Showing i-squared = - 1
Simon Question
Transformation 6
NickLaCascia_GeogebraHWunmessupables

Discover Topics

Numbers
Square
Variance
Parabola
Linear Equations