Given that Hexagon ABCDE has been reflected across line m, which of the transformations is the inverse of this reflection? Remember that an inverse maps each point back to its pre-image point. Drag the slider for the rotation and compare the points. Did the rotation map each point to its pre-image point? Return the slider to 0. Drag the slider for the dilation and compare the points. Did the dilation map each point to its pre-image point? Return the slider to 1. Reflect Hexagon C'D'E'F'G'H' across line m. Did the reflection map each point to its pre-image point? See below for explanation.
The inverse of a reflection across a line is a reflection back across the same line. In other words, a reflection is its own inverse, so the composition of a reflection with itself is the identity mapping. Other transformations or even combinations of transformations may map an image to its pre-image, but the inverse is unique and maps each point to its pre-image point in a single transformation, just as a number multiplied by its reciprocal results in the multiplicative identity.