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平行线 的副本
Author:
王玉霞
GeoGebra
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四邉形 (四年級) 教師版
【案例】2018年全国1卷理科12题
【案例】圆柱体内放置一个大球六个小球
兩組對邊相等的四邊形
三位數除以一位數（一）
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Prism and Cylinder 3
物件顯示條件
尋找三角形的內切圓
Tangent properties
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Angles
Ratios
Straight Lines
Integers
Histogram