| 原点 | origin |
| 軸 | axis |
| 座標 | coordinate |
| 座標軸 | coordinate axis |
| 第 n 象限 | n-th quadrant / octant |
| 互いに垂直である | perpendicular to each other |
| 互いに直交する | orthogonal to each other |
| 交点 | intersection (point) |
| 右手系 ・ 正系 | right-handed system |
| 左Pol系 | left-handed system |
| 数直線 | numbered line |
| 斜めに | diagonally / obliquely |
Cartesian Coordinate System / デカルト座標系
Also called Rectangular Coordinate System / 直交座標系
Oblique Coordinate System / 斜交座標系
Nothing to say, really...
Polar Coordinate System / 極座標系
Also called Circular Coordinate System / 円座標.
| 動径 | radius vector |
| 偏角 | deflection /yawing angle |
Cylindrical Coordinate System / 円柱座標
Nothing to say, really...
Spherical Coordinate System / 球座標 ・ 球面座標系
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