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爱心
Author:
何美华
GeoGebra
New Resources
第八周作业3
龙形曲线-分形龙
斐波那契螺旋弧线（表格法）
折扣
盈利與虧蝕
Discover Resources
龍騰4_1-1講段8
Viviani's curve
雙曲線
正方体展开图的副本
圓心在同一直線上且相切的圓(半徑可改變)
Discover Topics
Circumcircle or Circumscribed Circle
Quadrilaterals
Trapezoid
Equations
Geometric Transformations