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History, 10.09.2019 17:10 mazzi88

after a rotation of 90° about the origin, the coordinates of the vertices of the image of a triangle are a(6, 3), b'(-2, 1
and c'(1,7). what are the coordinates of the vertices of the pre-image?

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after a rotation of 90° about the origin, the coordinates of the vertices of the image of a triangle...
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