Dilating a quadrilateral

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Dilation is a technique for creating similar figures.

Each point is stretched outwards from the center point D by multiplying distances by the scale factor (Outwards if the scale factor is bigger than 1.)

Move the points A, B, C, D to change the shape of the quadrilateral.
Move the center point E to dilate from a different location.
Use the slider to change the scale factor.

Susan Addington, Created with GeoGebra