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極座標 r=1+cos(θ)
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GEOGEBRA啟
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比較數量-1
王二星际太平王宫号
中考东莞
roots
Penrose Triangle 2
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binary number system
面、面相交
area 面積
矩陣伸縮
四角柱體（長方體）的截面
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Trigonometric Functions
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