There are two teams. At some playing fields, the teams station themselves on opposite sides of the field, hence 'sides'. An American football field is shaped in a rectangle. While there are four 'sides', the longer sides are called 'sides' and the shorter sides are called 'ends'.
During a game.
A parallelogram has four sides.
There are seven officials on the field during a football game.
There are 3 sides on the Vince Lombardi trophy. On the top, it is in the shape of a football.
22There are 12 football players on the field at the same time. (both sides combined)
There are 22 players on the field if you count both sides. Basically making 11 players on the field for one side.
There are 90 minutes to a football game, plus injury time to be added.