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
query_wo: 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
query_cot: 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
question_for_eval: 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