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Pentagon
01
a geometric shape with five angles and five straight sides
02
a government building with five sides that serves as the headquarters of the United States Department of Defense
03
the United States military establishment
Example
In the game, each player had to draw a perfect pentagon without the use of a ruler.
Each face of a dodecahedron is a regular pentagon, contributing to its symmetrical structure.
The faces of a dodecahedron can be inscribed with regular pentagons, creating a geometric relationship.
In her math homework, she had to calculate the perimeter of various shapes, including triangles, squares, and pentagons.
X-ray crystallography revealed the molecular framework contained multiple rings incorporating pentagons and intersecting heptagons.
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