**Q: **Is a coordinate system a system which uses one or more numbers? ¶

**A: **Yes, or coordinates, to uniquely determine the position of the points or other geometric elements on a manifold such as Euclidean space.

**Q: **Is a coordinate system held constant and the other coordinate is allowed to vary? ¶

**A: **Yes, and then the resulting curve is called a coordinate curve.

**Q: **Is a coordinate system the Cartesian coordinate system? ¶

**A: **Yes.

**Q: **Is a coordinate system called curvilinear coordinate systems? ¶

**A: **Yes.

**Q: **Are coordinate systems used not only to describe the position of points? ¶

**A: **Yes, but also to describe the angular position of axes, planes, and rigid bodies.

**Q: **Is a coordinate system one where only the ratios of the coordinates are significant and not the actual values? ¶

**A: **Yes.

**Q: **Is a coordinate system the identification of points on a line with real numbers using the number line? ¶

**A: **Yes.

**Q: **Is a coordinate system the spheres with center at the origin? ¶

**A: **Yes.