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8.3 基本几何体（正三棱椎与外接球）
Author:
张中强
正三棱锥与外接球
GeoGebra
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Claude 解幾何題
sanjiaohanshu
Fibonacci Clock
兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
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可調包絡圓
两平面夹角1
gltyz 直角三角形旋轉體
Copy of 正多边形内接迭代
表面积变化
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Differential Equation
Continuity
Differential Calculus
Orthocenter
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