Nothing happens when the ball touches the touchline. When the ball completely exits the field across the line, then play is restart with a throw-in.
Whenever the ball completely exits the field across a touch line (side line) while during active play.
Soccer is a 11-a-side game.
depends if the field is a high school of pro or college field
No, the ball has to COMPLETELY cross the line in order for it to be called out. That means the entire circumfernce of the ball has to be on the out side of either the Touchline or Goal line.
For a 7-A-Side soccer field, the minimum dimensions are 25mX45m and the maximum dimensions are 30mX50m
11 a side
depends on the side of the triangles?
Soccer is played on a grass or turf field (or "pitch"), and not on a court. There are some variations of the game, such as futsal or indoor 5-a-side that are played on courts, but these are not proper soccer.