Someone else is stupid:
and----
Interview with Andrey Arshavin:
Andrei: He doesn’t just look at football as a game, as a square. He also analyzes the processes that happen in world football: development, transfer market, tactics.
Reporter: With the square, do you mean the training square?
Andrei: No, I mean the rectangle.
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Square - a game, with the ball, courtyard. Roughly speaking, they break each other. Here he says that he looks at (who is there watching) football not as a "just a ball to catch" but as a complex process.

And the answer "right-angle" is the answer to the dumb question of a journalist, who clearly did not pin the ball in the yard. Q"What can I say to you?"