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What is a rigid motion?

A rigid motion is a transformation in geometry that preserves the shape and size of a figure. This means that distances between points and angles remain unchanged during the transformation. Common types of rigid motions include translations, rotations, and reflections. Since the original figure and its transformed image are congruent, rigid motions do not alter the overall structure of the figure.


Why is a dilation not a basic rigid motion?

A dilation is not a basic rigid motion because it alters the size of a figure while maintaining its shape, rather than preserving distances between points. Rigid motions, such as translations, rotations, and reflections, only change the position or orientation of a figure without affecting its dimensions. In contrast, dilations involve scaling, which can either enlarge or reduce a figure, thus not satisfying the criteria of preserving lengths and angles.


What transformation will produce a scalar effect on an object?

Dilation


What is the difference between rigid transformation and a size transformation?

A rigid transformation is when a shape is moved with no changes to its shape whereas a size transformation is when a shape is moved with its shape becoming smaller or larger.


What is a example of a rigid motion transformation?

A rigid motion transformation is a type of transformation that preserves distances and angles. An example of this is a rotation, where a shape is turned around a fixed point (the center of rotation) without altering its size or shape. For instance, rotating a triangle 90 degrees around its centroid keeps the triangle's dimensions the same while changing its position. Other examples include translations (sliding) and reflections (flipping).