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1986全国文2
Author:
常振虎
GeoGebra
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兩組對邊相等和有直角的四邊形
球體建築師
四邉形 (四年級) 教師版
第八周作业
畫出對稱圖形
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色彩視覺藝術：內心與旁心
Rectangle
加減併式與估算
未命名圆锥的副本
柱面
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Median Line
Unit Circle
Cylinder
Constructions
Fractal Geometry