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圓心在同一直線上且相切的圓(半徑可改變)
Author:
lee chao ming
GeoGebra
New Resources
球体的体积推导（优化版）
兩位數加法
畫出對稱圖形
柱體建築師
錐體建築師
Discover Resources
龍騰4_1-1課例5
第四冊4-1習題8(1)
正四角錐(可以旋轉， 顯示邊， 選擇透視)
Net of pyramid
蜗牛壳模型
Discover Topics
Inequalities
General Quadrilateral
Trigonometric Functions
Mode
Isosceles Triangles