A helix is a mathematical three-dimensional curve.

Webs of three-dimensional curves, swoops and dodges and artful evasions.

It was the first time a molded plywood shell was shaped into three-dimensional curves.

A sandy texture added in a curving two-dimensional contour counterpoints the three-dimensional curves and enhances a sensuous intimacy.

"It's very difficult, because when you start doing three-dimensional curves, improving one parameter inevitably pushes another out of shape."

For example, the orbit of the Earth in space is approximately a circle, a three-dimensional (closed) curve in space: the Earth returns every year to the same point in space.

You can't make three-dimensional curves in welded metal very easily.

Generally a dolly will have more than one surface, each with its own radius of curvature (much like a three-dimensional French curve), allowing the craftsman more flexibility in using the tool.

Layers can also be twisted to create free-flowing three-dimensional curves especially relevant to generating shapes to provide good support in the backs of chairs.

The minimum total curvature of any three-dimensional curve representing a given knot is an invariant of the knot.