Mathematics, 22.06.2019 16:30 clare07

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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