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直綫

出自維基百科,自由嘅百科全書
(由直線跳轉過嚟)
平面上嘅直綫,紅綫同藍綫嘅斜率係一樣嘅,而紅綫同綠綫嘅 y-截距係一樣嘅

直綫粵拼zik6 sin3),平面幾何兩端最短距離所連嘅,唔直嘅線叫做曲線幾何中嘅直線無限長嘅,有限長嘅線,通常叫做線段

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