Are you saying that each pair of quadrilaterals intersect at a mutual vertex and nowhere else, and that each vertex is common to exactly two quadrilaterals?
Are you saying that each pair of quadrilaterals intersect at a mutual vertex and nowhere else, and that each vertex is common to exactly two quadrilaterals?
The problem is confusing.
Are you saying that each pair of quadrilaterals intersect at a mutual vertex and nowhere else, and that each vertex is common to exactly two quadrilaterals?
Yes, exactly.