This video discusses the basics of representing angles on a coordinate plane.
Topics discussed include:
0:10 - Initial and terminal rays
0:57 - Standard position
1:35 - Defining an angle with an ordered pair
3:05 - Negative angles
4:10 - Angles of more than 360 degrees
5:22 - Defining an angle by quadrant
6:20 - Coterminal angles
If you have any questions, feel free to ask in the comments section.