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definition of trigo
Author:
sealion1215
GeoGebra
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第三周作业效果演示
圓的基本性質
直線的斜率：水平變化 & 鉛垂變化
活动三：应用性质
三角函数 的副本
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畢氏定理倒水法
S5 2D Trigonometry
立體圖形
圓錐展開圖
椭球面
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Cone
Volume
Isosceles Triangles
Cylinder
General Quadrilateral