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sharon扭曲的正方形
Author:
杨秀芬
GeoGebra
New Resources
畫出對稱圖形
直角坐標平面上的旋轉變換
四邉形 (四年級) 教師版
近似值：有效數字
【案例】2018年全国1卷理科12题
Discover Resources
扇形滾動基測試題
向量的分解（非垂直）
Rolling Circle
同側AP-BP最大值
Slope of a tangent 切線斜率
Discover Topics
Parametric Curves
Tree Diagrams
Pie Chart or Circle Chart
Solids or 3D Shapes
Sequences and Series