What is rotation?
A rotation is a transformation that turns a figure about a fixed point called the center of rotation. Rays drawn from the center of rotation to a point and its image form an angle called the angle of rotation.
An object and its rotation are the same shape and size (congruent), but the figures may be turned in different directions.
Rotation means turning around a point.
The distance between a center to any point of the shape stays the same.
For rotation, you need
- An angle or degree of turn
- Eg: 90 degrees or a Quarter turn
- Eg: 180 degrees or a half turn
- A direction
- Clock wise
- Anticlockwise
- A Center of Rotation
- A point around which Object rotates
Directions of rotations
- Clockwise rotation means negative
- Anticlockwise rotation means positive
Rotation of 90 degrees clockwise
Rotation of 180 degrees clockwise
90 Clockwise, center 0
90 Anticlockwise, center 0
