<P> The goal structure consists of a horizontal crossbar suspended 10 feet (3.0 m) above the ground, with two vertical goalposts 18 feet 6 inches (5.64 m) apart extending vertically from each end of the crossbar . In American football the goals are centered on each end line; in Canadian football the goals are centered on each goal line . </P> <P> As a field goal is worth only three points, while a touchdown scores at least six (which usually becomes seven with a successful conversion, and potentially 8 with a two - point conversion), teams will generally attempt a field goal only in the following situations: </P> <Ul> <Li> It is fourth down (third down in Canadian rules), especially if the offense is more than a yard or two from a new first down, and within about 45 yards of the goal posts . </Li> <Li> In the first half, there is enough time remaining to execute only one more play . </Li> <Li> In the second half, there is enough time remaining to execute only one more play, and the team on offense needs three points to win or tie (four points in a few leagues given special circumstances). </Li> <Li> The game is in overtime, and a FG is the quickest, easiest, and least risky way to end the match . </Li> </Ul> <Li> It is fourth down (third down in Canadian rules), especially if the offense is more than a yard or two from a new first down, and within about 45 yards of the goal posts . </Li>

When do you kick a field goal in football
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