Drag the center of dilation, C, and the point to be dilated, A.[br]Select the scale factor of the dilation by using the input box. [br]Click show triangles to see how to dilate point A.

Change the center of dilation by dragging the center.[br][br]To change the type of polygon, use the top slider.[br][br]To change the scale factor, use the input box.[br][br]To see how to determine the coordinate of the image of a vertex, use the lower slider to select the point and then click "Show Triangles to ..."[br][br]To see the image of the polygon, click "Show Image". To show/hid the rays, click the button "Show/Hide Rays"