Visualization question?

How many four sided shapes does this diagram have?

http://www.intelligencetest.com/images/questions/visualization/5.gif



Answer is 26-30



What is the exact number and how did you count it?
I get 28

You look at the segmented sections in the combinations, horizontally and vertically.



You have 9 individual segments.



You then look for combinations of 2 segments.

You have 5 Horizontal combinations of 2 segments ~ 14

You have 6 Vertical combinations of 2 segments ~ 20



You then look for combinations of 3 segments.

You have 1 Horizontal combination of 3 segments ~ 21

You have 4 vertical combinations of 3 segments ~25



you then have 2 vertical combinations of 4 segments ~ 27

and 1 vertical combination of 5 segments ~ 28



It