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4. 翻页功能
Author:
GeoGebra Institute of WuXi
New Resources
Nested spiral octagon
畫出對稱圖形
四邊形的特性
美國國旗 (Codex 版)
近似值：有效數字
Discover Resources
測試
test
Copie de 河內塔 (Tower of Hanoi)
大貿險家 OF GGB
Quiz on Addition and Subtraction of Directed Numbers (2)
Discover Topics
Quadratic Functions
Arithmetic
Terms
Cosine
Pie Chart or Circle Chart
