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正弦公式證明 (Mr. KONG)
Author:
timkong
GeoGebra
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圓的切線方程
【案例】2013年安徽高考15题
画直线等分三角形的面积
球体的体积推导
圓周公式的應用
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美麗的萬花筒
內心
Percentage (Part-Whole) 所佔百分數
GGB 教程
任意角
Discover Topics
Sine
Normal Distribution
Equilateral Triangles
Surface
Frequency Distribution