The early TV screens were a large tube that was developed from round scopes as used in radar and other electronic devices. The TV Tube was made larger and a little more flat on the edges but the early ones appeared almost round. As technology improved, the TV screens became more and more square. So that is why most screens were square and therefore most TV cabinets were also square. MORE INFO TV screens show film and camera images which are rectangular in shape. To make the TV any other shape would either waste screen area or have to delete some of the original image.

Sony, Samsung, Sharp.

a television

TV or Not TV was created in 1973-02.

A tv.. if its proper LCD tv.. not that cellphone tv..