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椭圆的光学性质
Author:
孟宝兴
GeoGebra
New Resources
兩位數加法
畫出對稱圖形
錐體建築師
球體建築師
判斷球體
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Relationships between chords and their distances from centre
體積的量度 5
Angle at centre twice angle at circumference
杨辉三角
双曲线的参数方程的副本
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Kite
Intersection
Means
Subtraction
Special Points