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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
Isosceles Right Triangle
Midpoint Theorem (V2): Integer Solutions
Congruent Sides & Angles in △s: Exploration
Congruent Figures
Perpendicular Lines: Quick Exploration
Discover Resources
UnMessUpables 1.09 Agustina
TransformationsBeckley
The Rays We See
Tape Diagrams for Algebra (with examples)
Chapter-43-2: Flux approximation
Discover Topics
Symmetry
Step Functions
Hyperbola
Numbers
Set Theory