PMC 2009-10 Q12

題目十二

圓上有7個可移動的點。透過移動這些點,可得以下那一些圖案? Please find the full question with diagrams in this pdf file: https://www.dropbox.com/s/8jqsx3p0zkje5s3/Primary_Math_Contest_09_10_Answers.pdf?dl=0