Well, it is because of the appearance. A square has 4 rights angles, 2 pairs of parallel lines, 2d shape, and all the sides are the same length! so look out for square's!
rectangle
10000 square centimeters make up a single square meter.
The dude was a square.
You can make square pyramid.
Turning a square does not make it into a rhombus.
you make a square number by multiplying a number times itself.
There are about .836 square meters in a square yard.
a square in a circle
A square and and a triangle
you can make a "T-Square" a plus
39.3700787
10,000,000,000