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圓周角與圓心角之度數關係臆測(圓心在圓周角的外部)
Author:
Gideon Huang
GeoGebra
New Resources
近似值:有效數字
Nested spiral octagon
畫出對稱圖形
找出對稱軸
中華民國國旗 (Codex╱2026.10.06)
Discover Resources
Polygon Activity
摺紙1
example1_moon
相机快门模拟
Illusion-平行线错觉
Discover Topics
Ellipse
Division
Area
Arithmetic Mean
Trigonometric Functions