Rectangle you'll learn that in JAC
An oval :)
The gridiron.
the football field.
Football field.
The field of play in American football.
football
A fieldgoal is a gridiron football term.
perhaps, if it is a shortened version of gridiron.
Flag gridiron is played in some primary schools, it involves no contact. Few children play it as it is boring and involves little skill. Gridiron is mainly played by guys who failed at their first choice sport and wanted an easy way to get a scholarship.
Kind of. If you were to look at an American football field from above, the way the chalk lines are laid out for the yard lines and end zones would make it look something like a gridiron.
Answer. In north America they struggled at football and rugby league/union so they decided to invent lesser more basic sports so they could win at something by avoiding competition. Gridiron was born. The "Gridiron" is an American football field.