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二維
Author:
esther0120
GeoGebra
New Resources
算柱 (兩位數)
四邉形 (四年級) 教師版
直角坐標平面上的旋轉變換
兩組對邊相等和有直角的四邊形
Nested spiral octagon
Discover Resources
任務2
圓的性質
Percentage（百分法）
圓內接四邊形任務一: 提示二
拋物線5--包絡線法
Discover Topics
Geometric Distribution
Correlation
Diagrams
Area
Natural Numbers