How do you find the scale factor of similar polygons?

Question: How do you find the scale factor  of similar polygons?

The basic formula to find the scale factor of a figure is that scale factor is equal to dimension of the new shape divided by dimension of the original shape. To find the scale factor, we simply create a ratio of the lengths of two corresponding sides of two polygons. If two polygons are similar their corresponding sides altitudes medians diagonals and angle bisectors and perimeters are all in the same ratios.