five-sided
Học thuậtThân thiện
Definition
- Adjective: Having five sides; possessing five distinct straight edges that form a closed two-dimensional shape.
Usage
- The primary and only meaning of "five-sided" is to describe a polygon or any flat shape that has exactly five sides.
- It is a compound adjective formed from the number "five" and the adjective "sided."
- It is typically used attributively (before a noun) or predicatively (after a linking verb).
Examples
- Attributive use (before a noun):
- The children drew a five-sided star on the poster.
- A pentagon is a classic example of a five-sided figure.
- Predicative use (after a linking verb):
- This geometric shape is five-sided.
- The new courtyard design will be five-sided.
Advanced Usage
- Technical/Mathematical Context: In geometry, "five-sided" is synonymous with "pentagonal." However, "five-sided" is more descriptive for general audiences, while "pentagonal" is the formal geometric term.
- The lot is an irregular five-sided polygon. (General description)
- The building features a pentagonal atrium. (Formal/architectural term)
Variants and Related Words
- Pentagon (n): A plane figure with five sides and five angles.
- Pentagonal (adj): Having the form of a pentagon; five-sided. This is the direct adjectival form of "pentagon."
- Five-a-side (adj): A term used in sports (like soccer) to denote a version played with five players per team. This is a different, unrelated compound term.
Synonyms
- Pentagonal: This is the closest synonym, specifically meaning "having five sides and five angles."
Notes
- "Five-sided" is a specific numerical descriptor. Other similar constructions include (triangular), (quadrilateral), and (hexagonal).
- It describes only the property of having five sides and does not imply anything about the lengths of the sides or the size of the angles. A regular pentagon (with equal sides and angles) and an irregular pentagon are both "five-sided."
Adjective
- having five sides