System locating points using axes.

Coordinate system using radius, angle.

Coordinate system using radius, angles.

Polar coordinates with vertical axis.

Coordinates defining position using axes.

Variables describing system's configuration space.

In differential geometry, normal coordinates at a point p in a differentiable manifold equipped with a symmetric affine connection are a local coordinate system in a neighborhood of p obtained by applying the exponential map to the tangent space at p.

the ones used in a local coordinate system or a local coordinate space.