Khan Academy Static

In addition to the three rigid transformation, there are the dilations, which expand or shrink figures while keeping the same proportions. These are extremely important in the subject of Similarity! Gain experience by performing dilation, learn how to find the dilation that maps a given figure to another, and learn how to manually draw the image of a dilation.

7389_Dilating_shapes_expanding.html

7390_Determining_dilations.html

7387_Performing_dilations.html

7388_Dilating_shapes_shrinking.html