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平行四边形面积等于矩形面积
Author:
月如
GeoGebra
New Resources
兩位數除以一位數（二）
拼砌四邊形
兩組對邊相等的四邊形
柱體建築師
畫出對稱圖形
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图形
觀察軌跡求面積
极坐标
第1章知识结构框图
连杆
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Ellipse
Linear Regression
Equilateral Triangles
Polygons
Logarithmic Functions