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随机三角形背景
Author:
孟宝兴
GeoGebra
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三位數除以一位數(一)
兩組對邊相等的四邊形
錐體建築師
判斷球體
【案例】2013年安徽高考15题
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垂直線的斜率_hui sir
重心
魔术师的地毯
拋物線
面积
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Isosceles Triangles
Right Triangles
Tree Diagrams
Exponent
Multiplication