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Author:
zhihuai1982
GeoGebra
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四邉形 (四年級) 教師版
兩組對邊相等的四邊形
判斷球體
直角坐標平面上的旋轉變換
異分母分數減法
Discover Resources
Trigonometric Ratios: Sine 三角比：正弦
Decimal
廣義角的代換(180度加減角度)
題七
gjh-h04-01 多個堆疊的直角三角形
Discover Topics
Real Numbers
Differential Calculus
Circle
Scatter Plot
Median Line