Move the sliders to enlarge or reduce both circles.[br]Use the dilate feature to dilate the pre-image to be the same size as the image.[br]Use the translate feature to map the dilated pre-image circle onto the image circle.[br]Do this activity several times. What radii and scale factors did yo use for each? Were your pre-images able to be mapped onto the images?

Explain how you know that all circles are similar.