Answer:
Okay so for number 16
You have 2 parralel lines with a line through it.
Your trying to find the value of x
You have 2 angles given to you
one is 120 degrees whole the other is 5x+140 degrees.
They are corresponding angles. And now in this case corresponding angles are always equal.
So really all you gotta do is
120=5x+140
Now solve
-20=5x
x= -4
So the first one is x=-4
I can’t really see the other ones but here’s all you need to know
Alternate exterior - Equal
Altenrate interior - Equal
Corresponding - Equal
Interior - Not equal
Exterior-Not equal
Use these to guide you