Field goal (much like Australian rules' Super Goal or basketball's three-point line), a rule since adopted by the Stars Football League. Similarly, the sport of arena football sought (unsuccessfully) to repopularize the drop kick by making that worth four points; it failed, since only one kicker (Brian Mitchell) was able to do it with any semblance of proficiency. (In six-man football, where there is no offensive line, all field goals are worth four points instead of the usual three.) The overall field goal percentage during the 2010 NFL season was 82.3. In comparison, Jan Stenerud, one of only two pure kickers in
Five points determine a conic lines defined by opposite sides intersect in three collinear points. This can be reversed to construct the possible locations for a 6th point, given 5 existing ones. The natural generalization is to ask for what value of "k" a configuration of "k" points (in general position) in "n"-space determines a variety of degree "d" and dimension "m", which is a fundamental question in enumerative geometry. A simple case of this is for a hypersurface (a codimension 1 subvariety, the zeros of a single polynomial, the case formula_16), of which plane curves are an example. In the case of a hypersurface,