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Author:
李怡
GeoGebra
New Resources
Nested spiral octagon
長方體平面投影 (Codex版)
Fibonacci Clock
sanjiaohanshu
近似值：有效數字
Discover Resources
柱體
曲面
transformation_reflection
周长相等，正方形，长方形和正三角形，圆面积大小比较
加減乘除运算 出题器【有数字键盘】
Discover Topics
Percentages
Natural Numbers
Sine
Sequences and Series
Power Functions