Rotating a Shape
A shape can be rotated. When a shape is rotated, each point on the shape is turned by an angle about a centre of rotation.How to Rotate a Shape
Rotating a shape is easy.Question
Rotate the shape below by 60° clockwise about the point (3, 1).Step-by-Step:
1
Plot the centre of rotation.
In our example, the Cartesian coordinates of the centre of rotation is (3, 1). It is 3 units along the x-axis and 1 unit up the y-axis.
2
Draw a line from the centre of rotation to point A.
3
Measure the length of this line.
4
Measure the angle of rotation (60°) from the line.
Using a protractor, find 60° clockwise from the line found.
Mark this angle.
5
Draw a line from the centre of rotation.
It must be the same length as the line in Step 3 and be at the angle found in Step 4.