Dilations can be either an enlargement, which results in a figure that is larger than the original figure, or a reduction, which results in a figure that is smaller than the original figure.

Because dilations generate similar figures, you can use properties of similarity (specifically, proportional relationships) to determine measurements.

Click here to see a summary of dilations.

For an additional challenge, click on the image below and choose the 3D tab to explore dilations in three dimensions.