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Homothety HTML5

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Summary

The homothety is a transformation of space which dilates distance with respect to a fixed point O called the origin. The similitude ratio k is the number by which distances are multiplied. This ratio can be set  to negative values as well.

All objects in the animation can be moved  with a simple “click and drag”. The ratio k can be altered by clicking on the ratio and directly entering a new value.

Select an object then drag it around the plane.

Click and drag the origin O.

Learning goals

  • To illustrate how homothety works.