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圆柱沿着螺线展开成平行四边形
Author:
赵林
Topic:
Cylinder
GeoGebra
New Resources
異分母分數減法
拼砌四邊形
三位數除以一位數（一）
畫出對稱圖形
四邉形 (四年級) 教師版
Discover Resources
九點圓 (9-Point Circle)
矩形
DSE Circle-ACT01B Relationship between Centre and Chord
旁心
例题2（P点可拖动）
Discover Topics
Random Variables
Indefinite Integral
Rotation
Parametric Curves
Limits