Question

reflection is another kind of rigid transformation in which a figure is reflected, or flipped, over a line to create a mirror image of itself. for a real - life example, imagine making a peanut butter and jelly sandwich with two slices of bread. after spreading peanut butter on one slice and jelly on the other slice, you flip one of the slices on top of the other so they match up. a reflection is described by identifying the mirror line, or the line over which you flip the figure. the mirror line can be horizontal, vertical, or diagonal.
a mirror line _____
a acts as the line of symmetry between the figure and its reflection
b describes the angle at which you rotate one figure onto another
c shows where you begin the translation of a figure
d can be straight or curved

Explanation:

A mirror - line in a reflection is the line of symmetry. It is the line over which a figure is flipped to create its mirror image. Rotation involves turning a figure, translation is sliding a figure, and the mirror - line for a reflection is always straight.

Answer:

A. acts as the line of symmetry between the figure and its reflection