Как по Английски будет vierhoekig

Of or denoting a crystal system or three-dimensional geometrical arrangement having three axes at right angles, two of them equal.

Quadrangular.

(of an object or architectural structure) having four sides.

In a quadrangular manner; with four vertices and four sides.

Quadrangular.

Having, consisting of, or marked with four rings or ringlike sections.

Having or involving four foci.

Having four glands; affecting four glands.

(especially of a membrane) having or consisting of four laminae or layers.

Marked with a grid of small squares; having a pattern composed of small squares.

Having four loculi or compartments.

= quadrilocular .

Having four rays or radiating parts.

(especially of a tooth) having four cusps.

Having or bearing four tubercles or cusps.

A group of four lines of verse.