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GeoGebra
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【案例】2018年全国1卷理科12题
三位數除以一位數（二）
【案例】2013年安徽高考15题
畫出對稱圖形
兩組對邊相等的四邊形
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乘法
找找看三角形外接圓的圓心在哪？
M2: disc/shell
正立方體的截痕
随机数表
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Quadrilaterals
Equations
Inequalities
Tree Diagrams
Calculus