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happy new year
Author:
李春培
happy new year
GeoGebra
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GeoGebra数学资源(4-8年级)
盈利與虧蝕
平行線的判定
第八周作业
斐波那契螺旋弧线(表格法-可动态调节)
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HKCEE-AM 2010 Q17 part a+b
斯坦納-雷米歐司(Steiner-Lehmus)定理證明二
Locus (Parallel)
碎形
橢圓軌跡
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Division
Binomial Distribution
Dilation
Intersection
Angles