Square

A square is a quadrilateral (4-sided) figure that has all sides equal length, opposite sides parallel and adjacent sides perpendicular to each other.

Here is a square with sides 5 inches long:

Most floor tiles are squares. Can you find other squares around you?

Now, here's a problem for you:

How many squares are in this figure?
No. squares = ____

(careful! the answer is not 9!)