In the figure above, a shaded polygon which has equal sides and equal angles is partially covered with a sheet of blank paper, only one quadrilateral is showing. If x + y = 80, how many sides does the polygon have?
Choices:
A.Ten
B.Nine
C.Eight
D.Seven
E.Six
Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
Question: In the figure above, a shaded polygon which has equal sides and equal angles is partially covered with a sheet of blank paper, only one quadrilateral is showing. If x + y = 80, how many sides does the polygon have?
Choices:
A.Ten
B.Nine
C.Eight
D.Seven
E.Six
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: In the figure above, a shaded polygon which has equal sides and equal angles is partially covered with a sheet of blank paper, only one quadrilateral is showing. If x + y = 80, how many sides does the polygon have?
Choices:
A.Ten
B.Nine
C.Eight
D.Seven
E.Six