1) What is the reference angle for a 120 degree angle?
2) What is the reference angle for a 285 degree angle?
3) What is the reference angle for a 40 degree angle?
4) What is the reference angle for a -45 degree angle? (HINT: think negative=moving clockwise, NOT counterclockwise, from the positive x-axis)
5) What geometric shape does the reference angle help us to make?
