| A | B |
| Congruent | having the same shape and size |
| Similiar | having the same shape but being different in size |
| Line Symmetry | what a figure has if it can be folded on a line so that both parts match exactly |
| Transformations | the movement of a figure by a translation, rotation, or reflection |
| Translation | a movement of a figure to a new position horizontally, vertically, or diagonally |
| Rotation | a movement of a figure to a new position by rotating the figure around a point |
| Reflection | a movement of a figure to a new position by flipping the figure over a line |
| Tessellations | a repeating pattern of closed figures that covers a surface with no gaps and no overlaps |