• The 3 by 3 lattice has 4 lines of symmetry and rotational symmetry
of order 4.
How might this help?
• Flips or Turns / Reflections or Rotations – are they the same
or different?
• Try shading 1 square only. What symmetries are possible?
• Try shading 2, 3, 4.. squares only. What symmetries are now possible?
• How helpful would this table be?
|
Lines of symmetry/ Rotational symmetry |
||||||
|
|
0 |
1 |
2 |
3 |
4 |
|
|
Shaded |
1 |
|
|
|
|
|
|
2 |
|
|
|
|
|
|
|
3 |
|
|
|
|
|
|
|
4 |
|
|
|
|
|
|
• What omissions do you notice?