Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Geometry C4
Geometry C4 Transformations
| Term | Definition |
|---|---|
| vector | a quantity that has both direction and magnitude, or size, and is represented in the coordinate plane by an arrow drawn from one point to another. |
| initial point | the starting point of a vector |
| terminal point | the ending point of a vector |
| horizontal component | the horizontal change from the starting point of the vector to the ending point |
| component form | a form of a vector that combines the horizontal and vertical components |
| transformation | a function that moves or changes a figure in some way to produce a new figure |
| image | a figure that results from the transformation of a geometric figure |
| preimage | the original figure before a transformation |
| translation | a transformation that moves every point of a figure the same distance in the same way |
| rigid motion | a transformation that preserves length and angle measure |
| composition of transformations | the combination of two or more transformations to form a single transformation |
| reflection | a transformation that uses a line like a mirror to reflect a figure |
| line of reflection | a line that acts as a mirror for a reflection |
| glide reflection | a transformation involving a translation followed by a reflection |
| line symmetry | if a line can divide a shape or an object into two equal and symmetrical parts, it is said to have this. |
| line of symmetry | the line that divides a shape or an object into two equal and symmetrical parts |
| rotation | the transformation in which a figure is turned about a fixed point |
| center of rotation | the fixed point in a rotation |
| angle of rotation | the angle that is formed by rays drawn from the center of rotation to a point and its image |
| rotational symmetry | a figure has this when the figure can be mapped onto itself by a rotation of 180 degrees or less about the center of the figure |
| center of symmetry | the center of rotation in a figure that has rotational symmetry |
| congruent figures | geometric figures that have the same size and shape |
| congruence transformation | a transformation that preserves length and angle measure |
| dilation | a transformation in which a figure is enlarged or reduced with respect to a fixed point |
| center of dilation | the fixed point in a dilation |
| scale factor | the ratio of the lengths of the corresponding sides of the image and preimage of a dilation |
| enlargement | a dilation in which the scale factor is greater than 1 |
| reduction | a dilation in which the scale factor is greater than 0 and less than 1 |
| similarity transformation | a dilation or a composition of rigid motions and dilations |
| similar figures | figures that have same shape but not necessarily the same size |
Created by:
shelleypruit
Popular Math sets