Math - Answer Check

Prove that circle A with center (–1, 1) and radius 1 is similar to circle B with center (–3, 2) and radius 2.

From A to B: (x - 2, y + 1), scale factor 2?

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  1. Your question makes no sense to me.
    All circles are "similar" to each other.

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  2. Yes, but a proof explaining the translation and scale factor is expected in my quiz. So would the answer be correct in this case?

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  3. translation is correct
    scale factor of radii is 2
    scale factor of area is 4 , you didn't say what scale factor

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