# Reflections

- Author:
- Mark Humphries

- Topic:
- Reflection

## Reflection of triangle ABC over Line DE.

Construct segments AA', BB', and CC'. What is the relationship between those segments and line DE?

Is a reflection considered to be a rigid transformation?

If a point is reflected across the y-axis, how does the ordered pair change?

If a point is reflected across the x-axis, how does the ordered pair change?

If a point is reflected across the line y=x, how does the ordered pair change?

What is the definition of a line of symmetry?