| figures have the same shape and size | congruent |
| the line a figure is "flipped" over | line of reflection |
| a line that divides a figure in such a way as to create 2 congruent or matching figures. | line of symmetry |
| move or change the position of a figure | transformation |
| slide a figure | translation |
| flip a figure (mirror image) | reflection |
| turn a figure around a point. | rotation |
| figures have the same shape - may not have the same size | similar |
| a repeating arrangement of one or more shapes that completely covers a plane - no gaps or over laps | tessellation |