The degrees of each angle are shown in the figure, two of the angles are the same and both are x. If x = 20 and y = 30 in the figure above, what is the value of z?
Choices:
A.60
B.70
C.80
D.90
E.100
Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
Question: The degrees of each angle are shown in the figure, two of the angles are the same and both are x. If x = 20 and y = 30 in the figure above, what is the value of z?
Choices:
A.60
B.70
C.80
D.90
E.100
Please first conduct reasoning, and then answer the question and provide the correct option letter, e.g., A, B, C, D, at the end.
Question: The degrees of each angle are shown in the figure, two of the angles are the same and both are x. If x = 20 and y = 30 in the figure above, what is the value of z?
Choices:
A.60
B.70
C.80
D.90
E.100