Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
10 Cards in this Set
- Front
- Back
|
Reflection across x-axis |
The x value stays the same, while the sign of y changes. ex. (1,2) - > (1,-2) |
|
|
Reflection across y-axis |
The y value stays the same, while the sign of x changes. ex. (1,2) - > (-1,2) |
|
|
Reflection across y = x |
The x and y values switch. ex. (1,2) - > (2,1) |
|
|
Reflection across y = -x |
The x and y values switch and so do their signs. ex. (1,2) - > (-2, -1) |
|
|
Reflection through the origin |
The x and y values change ex. (1,2) - > (-1,-2) |
|
|
Rotation of 90 degrees counterclockwise |
x and y switch and y sign changes ex. (1,2) - > (-2,1) |
|
|
Rotation of 180 degrees counterclockwise |
Same as a reflection in the origin, x and y signs change. |
|
|
Rotation of 270 degrees counterclockwise |
x and y flip and x changes. ex. (1,2) - > (2,-1) |
|
|
Dilation |
Enlarge or reduce size of a shape. To “enlarge” an object, multiply both the x & y coordinates by a scale factor > 1. To “reduce” an object, multiply both the x & y coordinates by a scale factor < 1. |
|
|
Translation |
Slides objects left, right and up or down. x - > left or right y - > up or down |
