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Incircle, Excircles, and the 9-Point Circle
Author:
Steve Phelps
Topic:
Circle
,
Circumcircle or Circumscribed Circle
,
Incircle or Inscribed Circle
,
Triangles
There are four circles tangent to three sides of a triangle...
GeoGebra
And one circle tangent to all four circles.
GeoGebra
New Resources
Snake year !
z`]]
Math Clock Prime
apec
Constructing the Copy of an Angle + Angles Activities
Discover Resources
Project "Triangles explorers" : Sum of triangle's angles
Quiz Part 1
Cost-effectiveness of a moped
Rotations
reflection
Discover Topics
Scatter Plot
Sphere
Exponential Functions
Integral Calculus
Hypergeometric Distribution