The basics of angles are discussed including the parts and labeling angles.
Source: Mr. Wick Creations!
This video gives the basics of angles including the parts of an angle and how to label angles.
Source: Khan Academy from YouTube, http://www.youtube.com/watch?v=H-de6Tkxej8
This quick song will show you the basics of using a protractor.
This video by Khan Academy gives detailed information on using a protractor.
Source: Khan Academy from YouTube, http://www.youtube.com/watch?v=dw41PMWek6U