Thread: help with kinds of angle pairs

i was absent for days due to sickness and we have a homework. i can't understand the book itself. please help me by explaining on how to get the answer to these questions.. thank you.

this is the figure:

these are the questions
Line r intersects lines x and y
1. Give as many vertical angles as you can see in the figure

if <1=30deg, give the measure of
2.) <2
3.) <3
4.) <4

When you say "vertical angles" do you mean "pairs of vertically opposite angles"?

yes.

Surely you can count how many pairs of vertically opposite angles there are in this diagram...

You made it already? I think this is so simple.