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圓外切四邊形
Author:
李春培
Topic:
Circle
GeoGebra
New Resources
美國國旗 (Codex 版)
拼砌四邊形
近似值：有效數字
長方體平面投影 (Codex版)
兩組對邊相等的四邊形
Discover Resources
任務4
包絡線1
anlge at centre twice angle at circumference
纏繞畫1
描点法画反比例函数图像
Discover Topics
Differential Calculus
Median Value
Tangent Function
Rectangle
Trigonometric Functions