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vector addition and subtraction
Author:
sealion1215
GeoGebra
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【案例】2018年全国1卷理科12题
異分母分數減法
找出對稱軸
判斷球體
兩位數除以一位數（二）
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「相似三角形」任务3
[問題] 已知△PAB 的面積與周長，有幾個 P 點？
周界
量度身高
加减乘除运输出题器
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Diagrams
Geometry
Arithmetic Operations
General Quadrilateral
Pie Chart or Circle Chart