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Reference Angle 參考角

Author:Alex CHIK

Topic:Trigonometry

gMath 互動數學教室 http://www.geogebra.hk

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兩組對邊相等和有直角的四邊形
判斷球體
三位數除以一位數（二）
兩組對邊相等的四邊形
画直线等分三角形的面积

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Function3
two-example
切割正四面體
九九乘法表的認識
認識分數的副本

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Vectors 2D (Two-Dimensional)
Plane Figures or Shapes
Equations
Histogram
Expected Value

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