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### Best Answer paxwill says

I found 30. There are 9 if you ignore the smaller square inside the diagram. If you add the smaller square back in and count all the quadrilaterals that share an edge with it, you get 21 more. 9+21 = 30.

Nice work! There are a total of 30 4-sided polygons in the figure.

### jellohello says

If found 30 quadrilaterals as well. The total number has to be 2 plus a multiple of 4, because there are the two big squares, and for each quadrilateral inside the diagram there are four copies. Among the non-square quadrilaterals I found 7, therefore the total number is 2 + 4*7 = 30.

Excellent reasoning! You got the right answer, though Paxwill got it first. Thanks for participating in my shape counting puzzles.

### Janis Leslie Evans says

I see 20 if I'm looking at it right. Can't wait for the correct answer.

### Rosie writes says

I counted 26 at first glance. This will be fun to show my 4th graders. They are learning about polygons now.

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