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轨迹24
Author:
万超杰
GeoGebra
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画直线等分三角形的面积
兩組對邊相等的四邊形
畫出對稱圖形
兩組對邊相等和有直角的四邊形
【案例】2013年安徽高考15题
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角α与-α的正弦函数关系
梯形旋轉
ghseh 二次函數動畫左右平移
圓相切
中华人民共和国国旗
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Distributions
Upper and Lower Sum or Riemann Sum
Line Segment
Cuboid
Pythagoras or Pythagorean Theorem