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作業一
Author:
侯杰材
使ˋㄕ
GeoGebra
New Resources
異分母分數減法
畫出對稱圖形
錐體建築師
兩位數除以一位數（一）
【案例】圆柱体内放置一个大球六个小球
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Sum of Interior Angles of Polygons 多邊形內角和
地球儀5
時鐘
圆锥的侧面展开图3D动画的副本
时钟（序列文本）
Discover Topics
Distributions
Percentages
Ellipse
Derivative
Confidence Interval