| A | B |
|---|
| transformation | an operation that changes a figure into another figure, called the image |
| translation | a tranformation that moves each point of a figure the same distance in the same direction |
| reflection | a transformation that creates a mirror image of each point of a figure |
| rotation | a transformation that turns a figure a given angle |
| dilation | a transformation that stretches or shrinks a figure |
| scale factor | the ratio of corresponding side lengths of a figure and its image after dilation |
| cross section | the resulting figure when a 3-D figure is sliced by a plane |
| perpendicular lines | two lines that intersect to form a right angle |
| parallel lines | two lines in the same plane that do not intersect |
| multiply the x coordinate by -1 | rule for reflecting over the y-axis |
| switch the coordinates and multiply the y coordinate by -1 | rule for rotating a figure 90 degrees clockwise |
| multiply the y coordinate by -1 | rule for reflecting over the x-axis |
| multiply both coordinates by -1 | rule for rotating a figure 180 dregrees |
| 2 units to the right, 3 units down | to translate a figure (x+2, y-3), which way do you move? |
| k | What is another sign for scale factor? |
