Question

the original shape before any transformations are applied is called the. reflecting a shape over the y - axis involves flipping it. a line that runs vertically on the coordinate plane and is used as a reference for reflections is the. when reflecting a shape over the x - axis, the shape is flipped.

Explanation:

1. In geometry, the original shape before transformations is called the pre - image.
2. Reflecting a shape over the y - axis flips it across the y - axis.
3. The y - axis is a vertical line on the coordinate plane used as a reference for reflections.
4. When reflecting a shape over the x - axis, the shape is flipped across the x - axis.

Answer:

1. pre - image
2. across the y - axis
3. y - axis
4. across the x - axis