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Author:
Lin Ching Chieh
GeoGebra
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拼砌四邊形
Earth with coastline
兩組對邊相等的四邊形
四邉形 (四年級) 教師版
美國國旗 (Codex 版)
Discover Resources
Geometric Circle
利用Geogebra說明直線方程式的類型與性質
學習活動二之三解的圖形
正方体展开图的副本
双勾函数的图象.许兴华数学
Discover Topics
Polygons
Pyramid
Definite Integral
Arithmetic Mean
Correlation