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用表格迭代勾股数
Author:
宋晓燕
GeoGebra
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兩組對邊相等的四邊形
四邊形的特性
【案例】2013年安徽高考15题
拼砌四邊形
找出對稱軸
Discover Resources
test1(尋找北極星)
黎曼和
堆疊(圓、正方形、正三角形)
索瑪立方體
学习几何
Discover Topics
Tree Diagrams
Diagrams
Cube
Curve Sketching
Cuboid