Complementary angles are angles that add up to a 90 degree angle. You can remember this as a L shape with a box in the corner.
Adjacent angles are angles that are right next to each other.
Vertical angles are angles that are opposite to each other.
Linear pair angles are angles that add up to 180 degrees, or you can remember this as a perfectly straight line.
Adjacent angles are angles that have a common vertex (the area in the corner of the angle) and a common side but does not overlap.
Thus,
1) Vertical
2) Adjacent
3) Adjacent
