What is our definition of similarity?
If 2 figures have the same angles, then they are similar.
If 2 figures have proportional side lengths, then they are similar.
If there is a sequence of rigid transformations taking one figure to another, then they are similar.
If there is a sequence of rigid transformations and dilations that take one figure to the other, then they are similar.
3 units
4 units
6 units
8 units
A polygon has perimeter 12. It is dilated with a scale factor of k and the resulting image has a perimeter of 8. What is the scale factor?
1/2
2/3
3/4
4/3
