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30度直角三角形
Author:
郭勇
GeoGebra
New Resources
近似值：有效數字
判斷球體
美國國旗 (Claude 版)
拼砌四邊形
國旗 (Claude 版)
Discover Resources
正六面體摺疊
Contour Lines 等高線
圆锥曲线定义的拓展（卡西尼卵形线）
弗雷澤螺旋幻覺圖(難度99%)
B3C2-2例6-1
Discover Topics
Vectors 3D (Three-Dimensional)
Matrices
Polynomial Functions
Tree Diagrams
Histogram