< 1 and < 2 are vertical angles...because they are opposite angles made by two intersecting lines
< 3 and < 4 are adjacent....because they have a common side and a common vertex
C. because the decimal is never ending, so it is irrational.
Answer:
I don't even know if what you typed is a actual question or not so I'm just gone guess it's....A or B?
Step-by-step explanation: