Solution to the game with three circles.

Author:Doru Paunescu

Three blue circles with the same radius R meets two by two in A1, A2 respectively in A3. The red circle circumscribed to the triangle A1A2A3 has the same radius R iff the blue circles have a common point.

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Poligoane Turcan Eugeniu
Corpuri geometrice
Geometry in real life- crop circles (Nicoglu Sabina MD)
Flower made of circles (Nicoglu Sabina MD
Strings Turcan Eugeniu

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Patrulater inscriptibil
Ordonarea crescătoare a numerelor zecimale
geometrie
Segment AB with V as centre
Segmente proporționale, paralele echidistante

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Circle
Stochastic Process or Random Process
Kite
Standard Deviation
Cylinder