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Ex 12C NO.7
Author:
Jacky Tear
GeoGebra
New Resources
四邊形的特性
直角坐標平面上的旋轉變換
球體建築師
兩位數除以一位數（二）
兩組對邊相等的四邊形
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百分數（小學）：折扣 / 賺賠（Java 版）
S5 2D Trigonometry
立體圖形
三角形
定理介紹：切線與半徑 | Tangent and Radius
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Angles
Solids or 3D Shapes
Equations
Rational Numbers
Arithmetic