Final answer:
The angles between North and East and North and West are supplementary angles.
Step-by-step explanation:
The angles between North and East and North and West are C. Supplementary angles.
Supplementary angles are a pair of angles that add up to 180 degrees. In this case, the angle between North and East plus the angle between North and West will add up to 180 degrees. This makes them supplementary angles.
For example, if the angle between North and East is 70 degrees, then the angle between North and West would be 110 degrees, because 70 + 110 = 180.