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How many pentagons on a football ? ©. 1 © 1 2 ©

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Presentation on theme: "How many pentagons on a football ? ©. 1 © 1 2 ©"— Presentation transcript:

1 How many pentagons on a football ? ©

2 1 ©

3 1 2 ©

4 1 2 3 ©

5 ©

6 ©

7 ©

8 6 on the front ©

9 and 6 on the back ©

10 6 + 6 = 12 ©

11 You cannot make a ball using only hexagons ©

12 hexagons stay flat ©

13 but 20 hexagons ©

14 and 12 pentagons ©

15 make a football ©

16 Can you find a hexagon in this flys eye ©

17 Now find a pentagon ©

18 Find a hexagon on this tortoise shell ©

19 Now find a pentagon ©

20 Without pentagons the shell would be flat ©

21 Find the pentagons in the other pictures at home ©

22 Buckminster Fullers Geodesic Dome at Expo 67 in Montreal ©

23 Find the pentagon here at home ©


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