[Alexa]

About 'Where is the Pentagon?'

I know some people has no idea where is the Pentagon. Notice: not 'pentagon'; 'Pentagon'. Capital letter 'p'.

If you think about the pentagon -- it's (in geometry, of course) a kind of polygon. Its name comes from  the Greek words 'πέντε' (pente) and 'γωνία' (gonia), meaning 'five' ('5') and 'angle'). It is any five-sided polygon (or 5-gon). And the sum of the internal angles in a simple pentagon is 540°. (Source: https://en.wikipedia.org/wiki/Pentagon).

But the question is about the Pentagon. Where is the Pentagon? It is in the US, North America.

An interesting picture about it. Enjoy: ^{By Fosnez - http://en.wikipedia.org/wiki/Image:Building_and_ship_comparison2.svg, Public Domain, https://commons.wikimedia.org/w/index.php?curid=3396015}

This shows the Pentagon compared to several large structures: 1. blue: The Pentagon, 1414 ft or 431 m, 2. pink:   RMS Queen Mary 2, 1132 ft or 345 m, 3. yellow:   USS Enterprise (CVN-65), 1122 ft or 342 m, 4. green:   Hindenburg, 804 ft or 245 m, 5.purple:   Yamato, 863 ft or 263 m, 6. gray:   Empire State Building, 1453 ft or 443 m, 7. red:   Knock Nevis tanker, 1503 ft or 458 m.

[MSL]

 The simplest answer: it's in the US.