论文部分内容阅读
Wangqiangthoughthekneweverythingaboutdiagonalsandpolygons.Butthisquestionhadhimstumped :Howmanydiagonalsdoesa 13 gonhave ?Hereadthe
Wangqiangthoughthekneweverythingaboutdiagonalsandpolygons.Butthisquestionhadhimstumped: Howmanydiagonalsdoesa 13 gonhave? Hereadthe