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錐體的橫截面
Author:
SIN MING WONG
,
Anthony OR 柯志明
拖拉藍點，觀察錐體的橫截面。
GeoGebra
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四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
判斷球體
【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（二）
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線性規劃 - 數學技巧1
Angle between a Line and a Plane 投影與線面角
增長的圓
徐州2015中考-28
平移2
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Cone
Vectors
Perimeter
Equations
Triangles