The penalty area or 18-yard box (also known less formally as "the penalty box" or simply "the box") is an area of an association football pitch. It is rectangular and extends 16.5m (18 yd) to each side of the goal and in front of it. Within the penalty area is the penalty spot (or penalty mark), which is or 12 yards from the goal line, directly in-line with the centre of the goal. A penalty arc adjoins the penalty area, and encloses the area within from the penalty spot; it does not form part of the penalty area and is only of relevance during the taking of a penalty kick.