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suppose you know the coordinates of the vertices of a triangle. Explain how you would find the coordinates of the vertices of its image after a dilation with a scale factor of r

User Abad
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If the vertices of the triangle are

(a, b), (c, d), and (e, f)

We want to dilate it by scale factor r

Multiply each coordinate of the points by r

The image of the point (a, b) is (ar, br)

The image of the point (c, d) is (cr, dr)

The image of point (e, f) is (er, fr)

User Peter Svensson
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