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Retrouver le centre d'une homothétie


Le triangle T est l'image du triangle T par une homothétie.
A first quadrant coordinate plane. The pre-image and image of Triangles labeled N and N prime. The pre-image triange N has vertices at three, five, at four, five, and at four, three. The image triangle N prime has vertices at four, ten, at six, ten, and at six, six. There are points A B C and D plotted with point A at zero, four, point B at seven, twelve, point D at two, zero, and point C at eight, nine.
Quel est le centre de cette homothétie ?
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