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T15
Author:
孟宝兴
GeoGebra
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平行線的斜率
三位數除以一位數(一)
【案例】圆柱体内放置一个大球六个小球
画直线等分三角形的面积
空间中两直线的位置关系
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研習講義
Pappus古定理證明
相似三角形證明-10306
Question 4
拖拉小正方体
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Cylinder
Combinatorics
Sphere
Congruence
Fractions