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教学素材：抛物线参数方程
Author:
清风拂琴，陌上花开
GeoGebra
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球體建築師
柱體建築師
兩組對邊相等和有直角的四邊形
三位數除以一位數（一）
算柱 (兩位數)
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物理
餘弦定理修正項及風車證明
正三角形
Indices 4
正圆锥展开图
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Reflection
Prism
Parametric Curves
Conditional Probability
Root