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2017全国数学II 21题
Author:
wangyiyao
GeoGebra
New Resources
比較五件物件的重量
斐波那契螺旋弧线（表格法-可动态调节）
平行線的判定
撒针估算面积实验
科赫雪花
Discover Resources
Conic section-ellipse&hyperbola
F5__二元一次不等式
弗雷澤螺旋幻覺圖(難度99%)
特殊角三角函数值
Copy of 分數與小數
Discover Topics
Solids or 3D Shapes
Vectors 3D (Three-Dimensional)
Perimeter
Division
Sine