| Term | Definition |
|---|
| Image | a new figure |
| preimage | the original figure |
| isometry | something that maps or moves |
| one to one maping | preserves length |
| Reflection | acts like a mirror |
| line of reflection | the mirror line in a reflection |
| line of symmetry | a line that a figure in a plane has if the figure can be mapped onto ifself |
| reflected in the x axis | change the y |
| reflected in the y axis | change the x |
| reflection in the line y=x | flip it |
| Rotation | turned about a fixed point |
| center of rotation | the fixed point |
| rotation 90° clockwise | flip it change the x |
| rotation 180° clockwise | change both |
| rotation 270° clockwise | flip it change the y |
| rotation 360° | keep it the same |
| rotational symmetry | can you turn it and it be the same (turning less that 180°) |
| translation | an image that got slid |
| composition | 2 or more transformations into 1 |
| dilation | a figure that either gets bigger of smaller |
| expansion/enlargement | bigger |
| reduction/contraction | smaller |
| Matrix | a rectangular arrangement of numbers in rows and columns |
| dimensions of a matrix | the number of rows and columns |
| point matrix | the coordinates of a point can be displayed in a 2x1 using the first two for the x and the second row for the y |
Combine with other sets
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