Does a dilation about a center oo and scale factor rr map a circle of radius rr onto another circle?
a. examine the case where the center of the dilation coincides with the center of the circle.
b. examine the case where the center of the dilation is not the center of the circle; we call this the general case.

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

b

step-by-step explanation: