pentagonshaped
Pentagonshaped is an adjective used to describe an object, space, or symbol that has the form of a pentagon, a five-sided polygon. In descriptive writing it conveys a simple geometric property without implying function or orientation.
The term derives from pentagon (from Greek pente, "five," and gonia, "angle") combined with the suffix "-shaped."
Pentagonshaped is used to describe physical objects, layouts, or icons; examples include pentagon-shaped cookies, tiles, rooms,
The unhyphenated form pentagonshaped is less common in formal usage; many editors prefer the hyphenated pentagon-shaped