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Angle Between Two Planes Definition 平面與平面間之交角 定義
Author:
Steven S. H. Chu
GeoGebra
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兩組對邊相等的四邊形
【案例】2013年安徽高考15题
畫出對稱圖形
球體建築師
球体的体积推导
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立體圖形－截面
範例:做出一平面方程式通過A(6,0,0),B(0,6,0),C(0,0,3)的平面方程式。
Locus of a vertex of equilateral triangle
角的大小比較
活工(一)Q4
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Numbers
Constructions
Solids or 3D Shapes
Planes
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