Which angles are vertical angles?

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]

Analyze the diagram below and complete the instructions that follow. how to find tan