I made this foldable for a high school level Geometry class, but it can easily be adapted to a lower/higher level class by leaving off the backs of each page. This will leave the inside of each flap blank so you and your students can decide what to write together.
The foldable includes the following quadrilaterals:
Each flap lists the properties of the quadrilateral. And when constructed correctly, the foldable doubles as a venn diagram to show how all of the different types of quadrilaterals are related.
The foldable is very clear and easy to construct.