다섯 개의 직선인 변과 다섯 개의 각으로 이루어진 평면 도형.
A plane figure with five straight sides and five angles.
예문:
"In geometry class, we learned how to calculate the area of a regular pentagon."
"The tile pattern on the floor consisted of repeating hexagons and pentagons."
(보통 'the Pentagon'으로 쓰여) 미국 버지니아주 알링턴에 있는 오각형 모양의 미국 국방부 건물, 또는 미 국방부 당국을 이르는 말.
The headquarters of the US Department of Defense, used to refer to the department itself.
예문:
"The Pentagon has announced a new budget for national defense research."
"Security around the Pentagon has been tightened following the recent intelligence report."
다섯 개의 돌출된 보루를 가진 성곽이나 요새의 구조.
A fortification structure designed with five bastions or in a five-sided shape.
예문:
"The ancient fortress was built in the shape of a pentagon to provide better defensive angles."