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Teorema di Feuerbach
Author:
Marcello PEDONE
Il cerchio inscritto è tangente internamente al cerchio dei nove punti e questo è tangente esternamente ai tre cerchi ex-inscritti.
GeoGebra
New Resources
bewijs stelling van Pythagoras
Identify Opposite, Adjacent, Hypotenuse
Parabola - Write the Equation - Practice
רישום חופשי
Thales' Intercept Theorem
Discover Resources
Straight line motion and calculus 2
Conic #2
Parallel lines chapter 5.2
Matrices Test III-VII
Discover Topics
Coordinates
Intersection
Step Functions
Arithmetic
Similar Triangles