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向量與坐標
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+x sir
GeoGebra
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兩組對邊相等的四邊形
拼砌四邊形
找出對稱軸
【案例】2018年全国1卷理科12题
直角坐標平面上的旋轉變換
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軌跡
正方形推垛
x²+y²+z²的取值范围
分段函数和旋转曲面
夾擠定理 (The Squeeze Theorem)
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Geometry
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