In this lesson, we will learn:

- Application of Supplementary Angles
- Complementary Angles on Polygons
- Application of Complementary Angles
- Proving Vertical Angles Using Supplementary Angles
- Application of Vertical Angles
- Understanding Adjacent Angles
- Finding Adjacent Angles

__Notes:__- Supplementary angles: two angles which add up to 180°, don't necessarily have to be together.
- Complementary angles: two angles which add up to 90°, again, don't necessarily have to be together.
- The "S" of Supplementary stands for "straight", and there are 180° on a straight line.
- The "C" of Complementary stands for "corner", and there are 90° at a corner.
- Vertical angles: angles opposite each other are the same when two lines cross
- Adjacent angles: two angles sharing a common side and vertex, yet they do not overlap.