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正三角形的旋轉
Author:
李春培
正三角形的旋轉
GeoGebra
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【案例】2013年安徽高考15题
兩位數加法
算柱 (兩位數)
【案例】圆柱体内放置一个大球六个小球
異分母分數減法
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內心
雙曲線的平移
Sierpinski Triangle
实心曲面几何体
三角形
Discover Topics
Trigonometry
Optimization Problems
LCM and GCD
Arithmetic
Statistical Characteristics