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菱形六十面體
Author:
Ho-Kai Chen
先畫正二十面體, 再由中心點向各面畫出菱形面 ---- In geometry, a rhombic hexecontahedron is a stellation of the rhombic triacontahedron. It is nonconvex with 60 golden rhombic faces with icosahedral symmetry.
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探究三角形的全等條件
圓周公式的應用
垂直線的斜率
画直线等分三角形的面积
兩位數除以一位數(二)
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y=(x-a)²的圖形
優良作品1(沛綺)
[問題] a² + b² = 1, (c-4)² + (d-2)² = 5,求 ad - bc 最大值?
畢氏定理
二次函數
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Perimeter
Orthocenter
Kite
Circumcircle or Circumscribed Circle
Quadrilaterals