[Canned Heat]

Part of the 2015 rule book:

Section 11 - Field Goal

A Field Goal is made by kicking the ball from the field of play through the plane of the opponents’ Goal, which is an area either between the goal posts and above the cross bar, or, if above the goal posts, between the outside edges of the goal posts. A Field Goal is made by a drop kick or a place kick from (a) on or behind the line on a play from scrimmage or (b) during a fair catch kick. See 11-4-3; 3-9-1; and 10-2-4-a.

Section 41 - Try

A Try is the attempt by a team that has scored a touchdown to add one point (by a field goal) or two points (by a touchdown) during one untimed scrimmage down (11-3).

Section 4 Field Goal
Article 1. Successful Field Goal

A field goal is scored when all of the following conditions are met:
a.The kick must be a placekick or dropkick made by the offense from on or behind the line of scrimmage or from the spot of a fair catch (fair-catch kick). If a fair catch is made or awarded outside the inbound line, the spot of the kick is the nearest inbound line.
b.After the ball is kicked, it must not touch the ground or any player of the offensive team before it passes through the goal.
c.The entire ball must pass through the vertical plane of the goal, which is the area above the crossbar and between the uprights or, if above the uprights, between their outside edges. If the ball passes through the goal, and returns through the goal without striking the ground or some object or person beyond the goal, the attempt is unsuccessful.

Note: See 9-1-3 for restriction applicable to Team B formation at the snap.