在圆上选取n个点,两两连线,最多可以在圆内形成多�个交点? 知乎 Template




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Try and sketch some of theseDice, Sword swallower, Skull and crossbones, President, Bulldozer, Lederhosen, Amusement park, Post office, Nun, Pogo stick, view more ideas


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tomski在圆上选取n个点,两两连线,最多可以在圆内形成多�个交点? 知乎 coloring