Australian rules football
Field

Unlike other forms of football which are played on rectangular fields, Australian rules football playing fields are oval-shaped, and are between 135 and 185 metres (148 and 202 yd) long and 110 and 155 metres (120 and 170 yd) wide.

At either end of the field, two sets of posts are erected in a straight line to indicate the scoring areas on the field, each with two kinds of posts, named the goal posts and the behind posts respectively. The goal posts are placed first, located 6.4 metres (7.0 yd) apart from each other, with a behind post being placed a further 6.4 metres to the side of each goal post. The name for the field line between two goal posts is known as the Goal Line.

Around the perimeter of the field, two white lines are drawn between the set of behind posts in an arc-shape, marking the field of play.

Other field markings include:

The 50m arcs, centre square, centre circle and goal square are used at the beginning of each quarter or after each goal. With each team permitted a maximum of six players in each 50m arc, with one in the goal square and four players in the centre square with one in the centre circle. If this is breached, a free kick is awarded.
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