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圓外滾動的圓
Author:
官長壽(longlife.kuan)
GeoGebra
New Resources
異分母分數減法
球体的体积推导
兩組對邊相等和有直角的四邊形
找出對稱軸
【案例】2013年安徽高考15题
Discover Resources
方格紙上畫正方形2
極線對偶定理 / polar duality theorem
生活中的平面圖形─四邊形的性質
禪繞畫
dragon(龙)
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Ratios
Histogram
Diagrams
Trigonometry
Straight Lines