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正三角形的一边在正n边形上滑动时顶点的动态轨迹
Forfatter
肖建伟
GeoGebra
Nye Materialer
四邊形的特性
兩組對邊相等的四邊形
Nested spiral octagon
Earth with coastline
長方體平面投影 (Codex版)
Opdag Ressourcer
正七邊形2
函數的面積 (黎曼和)
點的堆墮
Indices 5
圆的有关概念
Udforsk emner
Plane figurer eller former
Trapez
Lineære funktioner
Multiplikation
Histogram