1. What is Rotation:
Rotation is one of the four types of transformation, covered in 11 Plus exams, where you need to identify and rotate the shape around a point in a coordinate grid.
A rotation is when a shape is turned or spun around a fixed point. You need to know three things in order to rotate a shape on the graph:
- Point of rotation
- The direction of rotation (clockwise, anticlockwise)
- Degree of rotation
1.1 Rotation on Graph Example
Look at the example below:
Figure (a) Figure (b)
Transformations:
a) Shape A is transformed to shape B by rotation of 90 degrees clockwise about the origin.
b) Shape A is transformed to shape C by rotation of 180 degree anticlockwise about the origin.
1.2 Solved Examples on Rotation:
a) Rotate the given triangle through 180 degrees about the point marked R. 
Solution:
b) Rotate the rectangle 90 degrees clockwise about the point (2,-4). 
Solution :
