Which Venn diagram is not correct?

Rhombuses
Squares
Squares
Rectangles

It is difficult to determine which Venn diagram is not correct without being able to see the diagrams. Please provide additional information or a visual representation of the Venn diagrams.

Based on the given options, the Venn diagram that is not correct is the one that includes "Rectangles" as a separate category. Rectangles are a type of quadrilateral that can be both squares and rhombuses, so they should not be represented as a separate circle outside of the squares and rhombuses circles.