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Un article trouvé pour ce sujet.
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Napoleon's theorem |
2004-02-27 |
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David pose la question :
How do i prove this : For any triangle, if you make 3 equillateral triangles
using the sides of the the original triangle, the central points of the 3
tringles another triangle that is equillateral.z
Chris Fisher and Penny Nom lui répond. |
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