2. UND’s Natural Math By: Georgette Cayer and Cheri Odenbach

3. A Stop Sign is an Octagon.

4. A Tree Branch Shows Division.

5. There are Many Circles and it Shows Roman Numerals.

6. This Building Shows Rectangles, Triangles and Arches.

7. This is a Cylinder.

8. This is Symmetrical.

9. This is a Sphere.

10. This is Intersection.

11. This Shows a Right Angle.

12. This Shows Addition.

13. This Star Shows a Circle and Triangles.

14. This Shows an Acute Angle Between the Tree and the Ground.

15. The Two Trees Show Fractions.

16. The Two Trees are Equal.

17. Do You Know What This Is?