What characterizes an opposite isometry?

An opposite isometry is characterized by its ability to change the orientation of a figure. In geometric transformations, isometries are the transformations that preserve distance, shape, and size, meaning that figures maintain their original form even after the transformation. However, an opposite isometry specifically refers to transformations such as reflection, which not only maintain distances and angles but also reverse the orientation of the figure.

For example, when a shape is reflected over a line, its position changes in such a way that it appears as a mirror image of itself. This changes the arrangement of points and thus their orientation while keeping the size and angles intact. This distinction is what makes option B the identifying feature of an opposite isometry, as it highlights the aspect of orientation change that is not present in other types of isometric transformations.