Areas of similar pentagons

This tool makes similar figures of different sizes. Change the size and shape (and area) of the Original shape by dragging the vertices Change the scale factor (which changes the lengths in both dimensions) by dragging the scale slider
The area ratio or change factor is the number you multiply the original area by to find the new area. You can find the area ratio or area change factor by dividing: (new area)/(original area) Experiment with how the area of the New (scaled) shape changes when you change the scale factor. How is the area ratio (area change factor) related to the scale factor (which changes lengths)?