From Wikipedia, the free encyclopedia
笛卡兒坐標系統(英文:Cartesian coordinate system),又叫直角坐標系統,係種正交坐標系統,由笛卡兒發明。坐標系統各有一條垂直(通常叫軸)同水平(通常叫軸)嘅數軸,兩條數軸交匯嗰點(0,0)叫原點。
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