What is a Reflection? | Printable Summary

A line of reflection can be any line in the coordinate plane that we reflect a figure over
The new figure that we get after we reflect is called an "image"
The image is the same shape and size as the original figure, just flipped over
The two figures are also the same distance from the line of reflection

1. Some common lines of reflection are the x-axis, the y-axis, and the line y=x
2. But any line in the coordinate plane can be a line of reflection
1. Since we're reflecting the figure over the y-axis, the y-axis is our line of reflection
2. The new figure that we get after we reflect is called an "image"
1. Since we're reflecting the figure over the x-axis, the x-axis is our line of reflection
2. The new figure that we get after we reflect is called an "image"
1. The line y=x has a slope of 1 and goes through the origin, splitting the coordinate plane in half diagonally
2. Since we're reflecting the figure over the line y=x, the line y=x is our line of reflection
3. The new figure that we get after we reflect is called an "image"