研磨自：[url=https://www.bilibili.com/video/BV1ET411w7kf/?spm_id_from=autoNext&vd_source=edcad05029f6d4b15eaba8a422397416]【GGB教学】（指令）折线图3-绘制正多边形曲线_哔哩哔哩_bilibili[br][/url][br][url=https://www.bilibili.com/video/BV1EB4y1Y7Pi/?spm_id_from=333.788.recommend_more_video.4]【GGB指令】（曲线）正多边形的参数曲线指令的推导_哔哩哔哩_bilibili[/url]

poly1=多边形(A,B,n)[br]l1=顶点(poly1)[br]l2=追加(l1(1),l1)[br]l3=x(l2)[br]l4=y(l2)[br]p(x)=折线图(0...n,l3)[br]q(x)=折线图(0...n,l4)[br]曲线(p(t),q(t),t,0,n)[br]