Using a slider and a point of dilation as an introduction to dilation

What happens when you change the point of dilation?[br]What happens when you increase the scale factor? What changes? What stays the same?[br]What happens when you decrease the scale factor? What changes? What stays the same?[br]Under what circumstances is the image larger than the preimage? Under what circumstances is the image smaller than the preimage? Same size?[br]Find the ratio of the distance from D to C to the distance from D to C'. Do the same thing with B and B'. Do the same thing with A and A'. What do you notice?