tetragon

1 8.0

A flat shape with four sides and four corners

noun
/ˈtɛtrəˌɡɒn/

: tetrágono

The architect designed a tetragon for the new building.

Examples

The shape of the garden was a perfect tetragon with equal sides.
Each window was designed as a tetragon, giving the building a unique look.
In geometry class, we studied the properties of a tetragon and compared it to other polygons.
A tetragon has four sides.
A square is a special type of tetragon because it has equal sides and angles.
In geometry class, we learned that a tetragon must have four sides and four angles.
The tetragon prominently displays its four angles at the corners of the shape.

Synonyms

quadrilateral

vstetragon

1 5.3

A flat shape with four straight sides and four angles

is the same concept but uses a different word form

quadrangle

vstetragon

Specialized

1 6.7

A shape with four straight sides and four angles

is the same concept but uses a different word form

Surface Forms

tetragon singular

tetragons plural

Morphology

tetragon = tetra- + -gon (semi-transparent) = tetra + gon

The word is formed from Greek combining forms 'tetra-' (four) + '-gon' (angle/side); the morphological structure is clear to those who know these combining forms but not to an average B1 learner who may not recognise them as standalone English words.

Etymology

The word tetragon comes from Greek parts tetra- meaning 'four' and -gon meaning 'angle' or 'corner', like in triangle or pentagon. So a tetragon is simply a four-sided shape with four angles, also called a quadrilateral.