Some Venn diagram practice problems:

Put lettered shapes from the lettered shape page on Venn diagrams showing the relationships between:

1. Scalene and acute triangles (universe: triangles)

2. trapezoids and rhombi (universe: quadrilaterals)

3. kites and rectangles (universe: quadrilaterals)

4. rhombi and squares (universe: quadrilaterals)

5. convex shapes and parallelograms(universe: quadrilaterals)

6. concave shapes and hexagons (hexagons are polygons with 6 sides--not necessarily regular or convex) (universe: polygons)

7. regular shapes and quadrilaterals (universe: polygons)

See answers here