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證平行四邊形 (對角線互相平分) (對邊 // 且相等)
Author:
W.L. Wong, Albert
GeoGebra
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判斷球體
sanjiaohanshu
錐體建築師
拼砌四邊形
Claude 解幾何題
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Quiz on Transformations in Cartesian Plane 直角坐標變換：測驗
立體形體 - (18)正方體的表面積計算
孟氏定理 (Menelaus' theorem)
三角形的高
繪畫長方形
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Difference and Slope
Solids or 3D Shapes
Constructions
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