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溫室
Author:
Jia-ming Shiu
GeoGebra
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兩組對邊相等的四邊形
球体的体积推导
異分母分數減法
【案例】2013年安徽高考15题
画直线等分三角形的面积
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平面與正立方體的截痕
生活中的平面圖形關係─線對稱
學習單:三角形任一外角與內角關係
duality of regular polyhedron
時鐘
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Congruence
Sphere
Geometric Distribution
Tree Diagrams
Vectors