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S420 Ebbinghaus illusion
Author:
学用数学
,
acchu
GeoGebra
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柱體建築師
異分母分數減法
【案例】圆柱体内放置一个大球六个小球
拼砌四邊形
判斷球體
Discover Resources
在三角形兩個邊各取一點使得三線段等長(BK=KL=CL)
过圆上一点作切线，三步
Locus (What's wrong)
圆锥侧面展开图
完全图
Discover Topics
Statistical Characteristics
Trigonometry
Square
Symmetry
Arithmetic