Football pitch
The pitch is rectangular in shape. The longer sides are called touchlines. The other opposing sides are called the goal lines. The two goal lines must be between wide, and be the same length. The two touchlines be between long, and be the same length. All lines on the ground must be equally wide, not to exceed . The corners of the pitch are marked by corner flags.
Street football (American)
An organized version has seven players to a side, such as in the American 7's Football league (A7FL); however, such organization is rare, players per side can range from as few as one ("one on one" football) playing both sides of the ball to dozens. Games are played on fields generally ranging from as short as 10 to as large as 50 yards, with the occasional game being played on a full-size regulation 100 yard field such as in the A7FL. Generally, the larger the field, the more players that can be incorporated into the game. The A7FL plays on a full-size regulation field in regards to length, however, the width of the field is shortened, from approximately 50 yards, to 40 yards in order to accommodate fewer players on the field.