Three-point field goal intersected the faceoff circles), but this proposal gained little support and faded after the WHA merged with the NHL. It was widely believed that long-distance shots in hockey had little direct relation to skill (usually resulting more from goalies' vision being screened or obscured), plus with the lower scoring intrinsic to the sport a two-point goal was seen as disruptive of the structure of the game. The Super Goal is a similar concept in Australian rules football, in which a arc determines the value of a goal; within the arc, it is the usual 6 points, but 9 points are
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,