Circle, triangle, and square. They’re simple, geometric, and eerily familiar. They look like something pulled straight out of a PlayStation controller or a childhood game of tic-tac-toe.

Inside a barn, three people start to sing a song and dance. ALL: (singing) A square and a rectangle, a circle and a triangle. A square and a rectangle, a circle and a triangle. BOY: If you’re ...

Any point P with coordinates (\(x,~y\)) on the circumference of a circle can be joined to the centre (0, 0) by a straight line that forms the hypotenuse of a right angle triangle with sides of ...