Measuring Rotation
Add yours
Sorry, we don't have any videos for this topic yet.
Let teachers know you need one by requesting it
Key Questions

Negative angles has to do with the direction of rotation that you consider in order to measure angles.
Normally you start counting your angles from the positive side of the x axis in an anticlockwise direction of rotation:
You can also go clockwise and so to avoid confusion you use a negative sign to indicate this kind of rotation.

You can draw an angle in standard position by positioning its vertex at the origin and one "ray" on the positive xaxis. The ray on the xaxis is called the initial side and the other ray is called the terminal side.
An angle is then measured POSITIVE for a counterclockwise rotation and NEGATIVE for a clockwise rotation:
When two angles have the same initial and terminal sides, they are said to be coterminal angles.
Angles of âˆ’315Â° and 45Â° are coterminal angles.

This key question hasn't been answered yet. Answer question

This key question hasn't been answered yet. Answer question