The resulting assemblies simulate biologically important structures, but their symmetry follows general geometric principles.

"I teach about the geometric principles behind Escher's art," said Ms. Berman, also 50 and also divorced.

The tans themselves are based on some very basic geometric principles.

The examples below are annotated to show the descriptive geometric principles used in the solutions.

Two theoretical horopter can be distinguished via geometric principles, depending on whether or not cyclorotation of the eyes is considered.

She has long been inspired by the purity and ubiquity of geometric principles and the way in which geometric rules govern the universe.

Esval was primarily a landscape painter that performed a series of quiet Norwegian landscapes constructed by geometric principles.

He also paid close attention to mathematical and geometric principles.

Then the geometric equivalence principle is formulated to require the existence of Lorentz invariants on a world manifold .

Some pavements in the former sequence also suggest a familiarity with the linear geometric principles of the latter.