Rotation

rotation at a fairground

"Rotation" means turning around a center:

The distance from the center to any point on the shape stays the same.

Every point makes a circle around the center:

 

rotation 2d   Here a triangle is rotated around
the point marked with a "+"

Try It Yourself

Here you can drag the pin and try different shapes:

And here you can choose an angle and see how to rotate different shapes point-by-point. Try and follow what happens each time:

 

Mathopolis:Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10