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Angle at Centre and Angle at circumference
Author:
Tsang Ka Chun
GeoGebra
New Resources
畫出對稱圖形
三位數除以一位數（二）
兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
【案例】2013年安徽高考15题
Discover Resources
Quartiles and Box Plot (two data sets) 四分位數與框線圖（比較兩組數據）
織布機織布機
Copy of 劉徽的「割圓術」
描点法画函数图像
圆锥面
Discover Topics
Trapezoid
Means
Interest Calculation
Sequences and Series
Parabola