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梯形的高
Author:
鍾文欽
Topic:
Trapezoid
GeoGebra
New Resources
畫出對稱圖形
判斷球體
異分母分數減法
拼砌四邊形
算柱 (兩位數)
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math test
賺賠：例1
軌跡四︰移動點與一固定直線保持固定距離(兩平行線)
Copy of 和差角公式几何证明
Geogebra 入门
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Rectangle
Isosceles Triangles
Cone
Sine
Parametric Curves