Circle
Because it feels like all shapes should choose if they have sides!
Just like boys, girls come in all shapes and sizes.
It can be all kinds of shapes
not all the windows are square. Square is one of the possible shapes.
There are no such shapes because all squares are quadrilaterals - by definition.
You can get all sizes and shapes, but you can just check on Google Images.
All right angle triangles have a square corner
kids like all shapes!
A square
square
A square