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生日问题1
Author:
徐晓东
GeoGebra
New Resources
三半圓間的相切圓(Codex╱2026.10.07)
sanjiaohanshu
近似值：有效數字
Nested spiral octagon
AI 訓練教室
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正五角柱
平行四邊形柱算體積(可以切開)
千分位分數
三角形
sin(x) 的函數圖形的副本
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Constructions
Power Functions
Vectors 3D (Three-Dimensional)
Sine
Sphere