# Decagon vs. Pentagon — What's the Difference?

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## Compare with Definitions

#### Decagon

In geometry, a decagon (from the Greek δέκα déka and γωνία gonía, "ten angles") is a ten-sided polygon or 10-gon. The total sum of the interior angles of a simple decagon is 1440°.
May 31, 2022

#### Pentagon

In geometry, a pentagon (from the Greek πέντε pente and γωνία gonia, meaning five and angle) is any five-sided polygon or 5-gon. The sum of the internal angles in a simple pentagon is 540°.
May 31, 2022

#### Decagon

A polygon with ten sides and ten angles.
May 31, 2022

#### Pentagon

A polygon with five sides and five angles.
May 31, 2022

#### Decagon

(geometry) A polygon with ten sides and ten angles.
May 31, 2022
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#### Pentagon

Pentagon A five-sided building near Washington DC, containing the US Department of Defense and the offices of the US Armed Forces. Used with the.
May 31, 2022

#### Decagon

A plane figure having ten sides and ten angles; any figure having ten angles. A regular decagon is one that has all its sides and angles equal.
May 31, 2022

#### Pentagon

(geometry) A polygon with five sides and five angles.
May 31, 2022

#### Decagon

A polygon with 10 sides and 10 angles
May 31, 2022

#### Pentagon

A fort with five bastions.
May 31, 2022
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#### Pentagon

A plane figure having five angles, and, consequently, five sides; any figure having five angles.
May 31, 2022

#### Pentagon

A government building with five sides that serves as the headquarters of the United States Department of Defense
May 31, 2022

#### Pentagon

The United States military establishment
May 31, 2022

#### Pentagon

A five-sided polygon
May 31, 2022

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