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正多边形的位似图
Author:
周胜华
GeoGebra
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判斷球體
拼砌四邊形
算柱 (兩位數)
找出對稱軸
兩組對邊相等和有直角的四邊形
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梯形
線性規劃例7
正方体表面积11种展开图
平面直角坐标系的构成
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Probability
Rotation
Equilateral Triangles
Plane Figures or Shapes
Angles