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1115-3
Author:
chen mingchuan
GeoGebra
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兩組對邊相等的四邊形
判斷球體
球体的体积推导
畫出對稱圖形
球體建築師
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兩直線夾角101.11.21
生活中的平面圖形關係─平行
徐峻彥's GGB book
Similar triangles inscribed iteration
Circle
Discover Topics
Piecewise Functions
Quadrilaterals
Translation
Linear Functions
Polygons