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For this problem, (a,b) is a point in the x-y coordinate plane and r is a positive number.
Using a translation and a dilation, show how to transform the circle with radius r centered at (a,b) into the circle of radius 1 centered at (0,0) .
Explain how to use your work in part (a) to show that any two circles are similar.
A set of exercises, commentary, and solutions from Illustrative Mathematics
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