Rotations
The first transformation we are going to look at in this section is rotations.
|
A rotation simply “rotates” an object around a given point. It does not change the size or shape, but it does change the orientation of the object. |
Take a look at the following rotations.
 |
Rotation of an Arrow |
Notice that the dark purple arrow has been rotated 90° counterclockwise around the center point to make the lighter purple arrow pointing up. It is then rotated another 90° counter clockwise to make the lightest purple arrow pointing left. The result is an arrow that is the same size and shape, but has a different orientation.
 |
Rotation of a Triangle |
Notice that the dark green triangle has been rotated 90° clockwise around the center point to make the lighter green triangle. It is then rotated another 90° clockwise to make the lightest green triangle. The result is a triangle that is the same size and shape, but a different orientation.
|
Rotation Around a Point |
Rotations can be clockwise or counterclockwise and can be any degree. Notice in this case that the dark orange smiley face has been rotated counterclockwise around the center point a few times. Each rotation is approximately 60°. The result is the lightest smiley face that is the same size and shape, but a different orientation.
