Identifying Rotation Symmetry
Does a square have rotation symmetry?
Identifying Angles of Rotation
How many angles of rotation cause a square to be carried onto itself?
Let's take a look at rotation symmetry in trapezoids.
Do any types of trapezoids have rotation symmetry?
Does the capital letter have rotation symmetry? If so, state the angles of rotation that carry the letter onto itself.
No, it does not have rotation symmetry.
1. What does it mean for a shape to have symmetry?
2. What does it mean for a shape to have rotation symmetry?
For each of the following shapes, state whether or not it has rotation symmetry. If it does, state the number of degrees you can rotate the shape to carry it onto itself.
4. Equilateral triangle
5. Isosceles triangle
6. Scalene triangle
9. Regular pentagon
10. Regular hexagon
11. Regular 12-gon
15. Where will the center of rotation always be located for shapes with rotation symmetry?
To see the Review answers, open this PDF file and look for section 2.9.