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Area of trapezoid
Author:
jack1012
兩個一樣的梯形如何組成一個平行四邊形
GeoGebra
梯形的高與平行四邊形的高有什麼關係呢? 為什麼? 平行四邊形的底邊與梯形有什麼關係呢??
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美國國旗 (Codex 版)
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畫出對稱圖形
Discover Resources
四連桿(可調)
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三垂線定理
一道三视图的题目(三视图作法参考)
Tangent of circle
Discover Topics
Trapezoid
Median Value
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Incircle or Inscribed Circle
Numbers