Geometry Chapter 7- Vocabulary for 2/10/12
About this set
Created by:
crhoades97 on February 10, 2012
Subjects:
Description:
Geometry Vocabulary for quiz 2/10/12
Log in to favorite or report as inappropriate.
Order by
18 terms
Terms | Definitions |
|---|---|
| (X, -Y) |  If (x,y) is reflected in the x-axis, its image has coordinates (_, _) |
| (-x, y) | If (x,y) is reflected in the y- axis, its image has coordinates (_,_) |
| (y, x) | If (x,y) is reflected in the line y=x, its image has coordinates (_,_). |
| (-y,x) | Rotating (x,y) 90 degrees counterclockwise about the origin |
| (-x,-y) | Rotating (x,y) 180 degress counterclockwise about the origin |
| (y,-x) | Rotating (x,y) 270 counterclockwise about the origin |
| (x,y) | Rotating (x,y) 360 counterclockwise about the origin |
| Glide Reflection | a translation followed by a reflection where the line of reflection is parallel to the vector |
| Vector | A quantity that has magnitude (length) and direction |
| Translation | an isometry in which the points in the original figure move an identical distance along parallel paths to the image. All points in the preimage are equidistant from their points. A distance and a direction together define this. |
| Vector | A translation is described by a __(Blank)___ which has magnitude and a direction. |
| Compositions | When two of more transformations are combined to produce a single transformation. The order the transformations are performed may or may not affect the final image. The composition of two (or more) isometries remains an isometry. |
| Dilations | A transformation of a shape in which the shape remains the same but the size changes. |
| Scale Factor; center of dilation | A dilation requires a __(Blank)___ and a __(Blank)___ |
| Isometry | A dilation is not an __(Blank)___ |
| Size | A dilation changes the __(Blank)___of an object |
| Shape; Angles | A dilation does not change __(Blank)___ and __(Blank)___ of an object |
| Positive | The scale factor of a dilation must always be __(Blank)___ |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.