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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
Taylor Polynomial
Droste effect
Variation Theory Parallelogram Proofs
Poorly Drawn Parallelograms
Quiz: Finding Average Rate of Change
Discover Resources
Arcs proportional to angles at circumference
Review and Practice Solving Oblique Triangles
Step 3
מגן דוד רנדומלי
Урок 1
Discover Topics
LCM and GCD
Line Segment
Geometry
Expected Value
Constructions