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18 October, 07:57

List the transformations that are rigid motions? Which are not?

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  1. 18 October, 08:07
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    We don't even get a menu? Man.

    Transformations that are rigid motions are also called isometries. They preserve size and shape.

    Rigid Motions:

    Translation

    Rotation

    Reflection

    There's often another one called a

    Glide Reflection

    which is a combination of translation and reflection.

    Not Rigid Motions:

    Dilation

    Obviously dilations change the size. There are also transformations that distort the figure, for example scaling the coordinates differently. Let's call them:

    Stretching

    Shearing
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