1. The Greedy Triangle (Looking at Polygons)

2. Triangle

3. Quadrilateral

4. Pentagon

5. Hexagon

6. Heptagon

7. Octagon

8. Nonagon

9. Decagon

10. Can you make a triangle by putting your hand on your hip?

11. MATCH TRIANGLE HEXAGON OCTAGON HEPTAGON NONAGON QUADRILATERAL DECAGON PENTAGON

12. Let’s look at irregular polygons Irregular polygons are made up of segments that are not all the same size, so their interior angles will not be equal. However they are still named according to how many sides they have

13. What’s this?

14. Quadrilateral

15. What’s this?

16. Quadrilateral It’s got four sides, right?

17. What’s this?

18. Pentagon

19. How about these?

20. Are they polygons? How many segments make up each one?

21. How about these? hexagon

22. How about these? hexagon octagon

23. How about these? hexagon octagon This one is not a polygon! Why not?

24. What polygons can you find in our classroom?