Sure that's easy: two sides.
Outside and inside
---Original Message-----
From: Met History <[log in to unmask]>
To: [log in to unmask]
<[log in to unmask]>
Date: Tuesday, December 01, 1998 12:34 PM
Subject: Re: Washington Monument
>"Chrysler" Building
>White "House"
>Rhode "Island"
>"Pacific" Ocean
>"Ladies" Room
>May I "borrow" a match?
>"Wonder" Board
>
>Signed, Christopher "Gray"
>
>PS Do you know anyone who has ever actually counted the sides of the
>"Pentagon"?