Own goal point". As a legitimate defensive play, an Australian rules football defender may concede an "own score". Such a score, referred to as a "rushed behind" and statistically credited to no player (score sheets simply include the tally of rushed behinds), results in the opposition team scoring one point. A defending player may choose to concede a rushed behind when the risk of the opposition scoring a goal (worth six points) is high. It is impossible for a team to concede an own goal worth six points. Own goal An own goal is an event in competitive goal-scoring sports (such as
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,