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1977北京理7
Author:
常振虎
1977北京理7
GeoGebra
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算柱 (兩位數)
【案例】2018年全国1卷理科12题
兩組對邊相等和有直角的四邊形
拼砌四邊形
三位數除以一位數（一）
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極線對偶定理 / polar duality theorem
Translation, Reflection and Rotation
指數與對數函數
圓柱體斜切塊體積
表内乘法
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Ellipse
Integers
Vectors
Matrices
Integral Calculus