L4 Summary
Completion requirements
Unit A: Geometry
Chapter 2: Transformations
Summary
Transformations
A transformation is the movement of an object by changing its position, size, and/or shape. There are four different types of transformations.
- A dilation is the change in size of a shape or object.
- A translation is the horizontal and/or vertical movement of a shape or object.
- A reflection is a transformation that creates a mirror image of the original shape or object.
- A rotation is the movement of a shape or object about a fixed point.
Rotations
The four most common rotations are
- quarter-turn (90°)
- half turn (180°)
- three-quarter turn (270°)
- full turn (360°)
Rotations can be made in the counterclockwise (to the left) or clockwise (to the right) direction.