Reflections (over x-axis, y-axis, y=x, and line x=-2)

What you’ll find in this video:

1) What are reflections? (0:18)

2) Reflection over x-axis(0:36)

3) Rigid Motion (2:14)

4) Reflection over y-axis (1:20)

5) Reflection over line y=x(2:37)

6) Summary of Reflections Basics (x-axis, y-axis, y=x) (3:40)

7) Reflection over line x=-2(3:57)

Reflections in a coordinate plane are exactly what they sound like! When a point, line segment, or shape is reflected over a line it creates a mirror image of itself.  I always like to think of a butterfly or a page being folded in half, where there is perfect symmetry.

All reflections maintain something called Rigid Motion.  This means that when a shape or line segments are reflected, the length and angles of all sides remain the same.

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