When commentators and football fans say "breaking the plane" they're talking about the endzone. The first and foremost rule in scoring a touchdown is that the football must break the plane or cross into the endzone some kind of way for anyone to even think about it being a touchdown.
If a team runs the ball, it wouldn't matter if the player got his whole body into the endzone. If the ball didn't break the plane as he went in it is not a touchdown.
If the ball is passed and is caught by a player who is falling forward out of the endzone and he doesn't allow the ball to break the plane it is not a touchdown.
A plane is a flat surface
Not really, because tessellation is about covering a plane surface. A football is not a plane surface.
By the definition, A plane which makes an angle (THETA) with the horizontal is said to be inclined plane. Inclined plane has made lots of work very easy. It's a simple machine.
It has a curved surface.
dots on a coordinate plane
Where a pilot sits in a plane.
A catch in PRO football requires 2 feet in the end zone. A catch In college requires 1 foot in the end zone. The ball breaking the plane of the goal line on a run, or catch and run in the field of play.
the breaking down of rock