# Rotations

- Author:
- Torri L. Martin

- Topic:
- Rotation

Look at the triangles above. How could we transform ABC into AB'C' without moving vertex A?

Could you have done the same things with translations? Why or why not?

A

**rotation**is a transformation that turns a figure about a fixed point for a given angle, called the angle of rotation, and a given direction. The**angle of rotation**is the amount of rotation about a fixed point, or point of rotation. Rotation can be clockwiseor counterclockwise. The**point of rotation**can be a point on the figure, outside of the figure or inside the figure.## In your own words, give the definition of rotation.

## Which two directions can you rotate a figure?

## What is the angle of rotation?

## A point of rotation can be found in three places. Put a point of rotation on each of the figures below.

## Use the toolbar below to play with rotations below and create your own design! The style button on the right allows you to change the color of your triangle.

## Self-assessment:

Select all that apply

- A
- B
- C