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Nfl
founded in 1920
Downs
4 downs ( try and gain 10yards for a 1st down)
Players
11
Quarters
4
Imaginary line
separates the offense and the defense
touchdown
6 points
Center
job is to snatch the ball to quarterback
Football feild
120 yards
Game starting off
kickoff
NFL
national football league
Note 
Flashcard (22)