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GeoGebra
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直角坐標平面上的旋轉變換
【案例】2018年全国1卷理科12题
算柱 (兩位數)
近似值：有效數字
錐體建築師
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gjc096a19 平行四邊形內截兩扇形
禪繞畫
圓周公式應用題1的副本
Uses of Trigonometry
橢圓代數性質,光學性質,生活應用
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Right Triangles
Parabola
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