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Uses of Trigonometry
Author:
ylleung
GeoGebra
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兩位數加法
三位數除以一位數（二）
判斷球體
四邊形的特性
球體建築師
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mario coin
文字工具：設定旋轉文字位置
gltzk 角錐的兩種展開圖
求兩斜線區域的差
相机快门模拟
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Circle
Angles
Parabola
Equilateral Triangles
Expected Value