With angles you need to know about complementary, supplementary and vertical angles. Not only do you need to know how to find the missing angle, you need to use that information to solve equations. Angles and not just for Angels.
Angle Basics
Equations with Vertical Angles
Solving Inequalities
NC Math 7 EOG Released Test
Complete problems 15, 27
EOG Released Solutions
Watch these videos to help you understand how to solve the above questions
7thGrade_Q15.mp4
Question 15
7thGrade_Q27.mp4
Question 27
Check Your Knowledge
Disclosure: This is a review website. This can be a valuable tool to help you review concepts already taught in class.