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四点共圆
Author:
Zhang Wenchao
GeoGebra
GeoGebra
New Resources
畫出對稱圖形
找出對稱軸
第八周作业
兩位數除以一位數（一）
兩組對邊相等的四邊形
Discover Resources
三角形的外心
給圓上的四點 觀察其所能形成的三對 阿波羅涅斯極偶 關係
curve 函數的示範
最佳解
【2020高考】全国1卷 第3题
Discover Topics
Similar Triangles
Exponential Functions
Sine
Cylinder
Vectors 3D (Three-Dimensional)