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Answer:
4.
Once is opposite to
, they are the same. It is the same for
, equals to 40º.
m∠y = 40º
The ∠x and 40º are supplementary, therefore ∠x = 140º.
∠z = 140º
m∠x = 140º
m∠y = 40º
m∠z = 140º
5.
Considering the explanation from the question 4:
m∠x = 50º
m∠y = 130º
m∠z = 50º