The classical labyrinth always was depicted in rectangular shape, just in the oldest representations on coins and engravings.
Again one recognises very well the basic pattern in a rectangular form. The path sequence also is typical.
The centre should be bigger than only a path width. Because the square basic pattern was maintained, the centre becomes an irregular, rectangular polygon.
How does one get, however, a completely square labyrinth?
This is only possible if one gives up the basic pattern and makes the centre, e.g., with the 5-fold path width.
Then the labyrinth looks like this:
The path sequence is preserved, the form has changed. But it remains a classical labyrinth.
Who would like to build one, is invited to see, print, store or copy the layout drawing as PDF file.