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20200329平面截圆锥
Author:
陈敦莹
GeoGebra
New Resources
盈利與虧蝕
双心四边形
龙形曲线-分形龙2
斐波那契螺旋弧线（表格法）
斐波那契螺旋弧线（表格法-可动态调节）
Discover Resources
waaachen
曲柄滑塊
求滿足不等式的最大/最小整數
Locus
公因數
Discover Topics
Polygons
Limits
Circumcircle or Circumscribed Circle
Vectors 2D (Two-Dimensional)
Surface