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引力弹弓
Author:
贾坤(模型库)
GeoGebra
New Resources
盈利與虧蝕
龙形曲线-分形龙2
直線的斜率：水平變化 & 鉛垂變化
第八周作业2
常见四边形是否是双心四边形
Discover Resources
正三角形尺规作图
Relationships among 3 Circle Theorems 三個圓定理的關係
电子表格建点
指考試題
几何概型
Discover Topics
Upper and Lower Sum or Riemann Sum
Right Triangles
Planes
LCM and GCD
Plane Figures or Shapes