Answer:
x and y
Step-by-step explanation:
Answer:
#2 option: 
Step-by-step explanation:


= 
Answer:
148
Step-by-step explanation:
a line (cd) is 180°
cba + and must be 180°
180-33=148
Recall that

There are three cases to consider:
(1) When

, we have

and

, so

(2) When

and

, we get

and

, so

(3) When

, we have

and

, so

So