Answer: First three is correct. Angle 1 = Angle 3 is incorrect.
Hopefully this helps jpg.009
This can be easily figured out. Check to see what points are on the bottom and that is your answer.
B
Given the following equation:

The given equation can be written using the commutative property
Where: a + b = b + a
So, the given equation can be written as follows:

So, the answer will be: 16 = z - 9