rechteckiger

Rechteckiger is the attributive masculine singular form of the German adjective rechteckig, meaning rectangular. It is used to describe a noun that has the shape of a rectangle, i.e., a four‑sided figure with four right angles. In geometry, a rectangle is a parallelogram with all angles measuring 90 degrees; its opposite sides are equal and parallel, and its diagonals are equal and bisect each other.

In everyday language, rechteckiger describes objects or forms with a rectangular shape or cross‑section. Examples include a rechteckiger Tisch (rectangular table), eine rechteckige Form (rectangular shape), or ein rechteckiger Querschnitt (rectangular cross‑section). The form rechteckiger appears in contexts where the noun is masculine and in the nominative singular after an indefinite article (ein rechteckiger Tisch). Other gender and article combinations yield different endings, for instance der rechteckige Tisch (masculine with definite article) or eine rechteckige Form (feminine).

Rechteckig is distinct from quadratisch. While rectangle refers to any four‑sided figure with right angles, quadratisch denotes a square, where all sides are equal. A square is a special case of a rectangle, but quadratisch emphasizes equal side length rather than the broader rectangular shape.

Etymology traces rechteckig to Rechteck (rectangle) plus the adjectival suffix -ig. The term appears across science, architecture, design, and everyday language to convey a rectangular form.