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quadrilaterals 6
Author:
iedc
GeoGebra
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【案例】2018年全国1卷理科12题
畫出對稱圖形
兩位數除以一位數(一)
異分母分數減法
四邊形的特性
Discover Resources
waaachen
正三角形內一點到三頂點的距離
正三角形內部一點
七巧板
长方形边线展开
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Curve Sketching
Addition
Random Variables
Cube
Set Theory