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waaachen
Author:
陳兪宏
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GeoGebra
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球體建築師
兩組對邊相等的四邊形
三位數除以一位數（二）
柱體建築師
找出對稱軸
Discover Resources
二項分佈
三角函數的疊合
進出刀量測-圓形
圓與切線
两角和的余弦公式几何证明
Discover Topics
Cosine
Terms
Arithmetic Operations
Unit Circle
Piecewise Functions