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单晨答重庆李琳
Author:
单晨
GeoGebra
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【案例】2018年全国1卷理科12题
畫出對稱圖形
兩位數加法
三位數除以一位數（二）
判斷球體
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內切圓
三角測量01
同心圓+等分割線
laptop height
Twghmkc_時鐘
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Difference and Slope
Matrices
Tree Diagrams
Planes
LCM and GCD