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正三角形堆垛
Author:
施奕瑄
GeoGebra
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三位數除以一位數（一）
異分母分數減法
【案例】2013年安徽高考15题
兩組對邊相等的四邊形
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GGB2
向量求和动画演示
圓柱截面曲線
數學電腦繪圖與解題
線性規劃
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Pyramid
Differential Calculus
Linear Programming or Linear Optimization
Optimization Problems
Mathematics