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geo notecards 66-77
| Question | Answer |
|---|---|
| 1. Right angle 2. Acute angle 3. Obtuse angle | 1.90 2.<90 3.>90 but <180 |
| opposite rays | if a point if between two other points on a line then two opposite rays are formed |
| bearing | 1. describes positions 2. measures clockwise from north |
| vector symbol | 1. a directed line segment 2. measure counterclockwise from the horizonal |
| 1. origin of a vector 2. endpoint of a vector | 1. begining point of a vector 2. ending point of a vector |
| equal vectors | have the same direction and the same length |
| vector sums | For vector sums, the following is true: XY+YB=XB. equal meaning that they start and end in the same places |
| translation | a transformation that moves all the points in a plane a fixed distance in a given direction |
| translation vector | Its direction slows the direction of the translation, and its length gives the distance each point travels |
| 1. properties preserved by translations 2. properties NOT preserved by translations | 1. A. the orientation of the figure. B. any property that has to do with the size of the figure. a. lengths of sides b. measures of angles. c. area and perimeter. 2. location of the figure. |
| symbol for a translation vector on a coordinate plane | Examples: <4,2> means to move the point 4 right and 2 up. <-3,5> means to move the point 3 left and 5 up. <-6,-1> means to move the point 6 left and 1 down. |
Created by:
khloe_yeldell