> 3rd grade

Počet čtyřúhelníků

Tiles 2

Instructions:

Calculate the number of rectangular quadrangles (rectangles and squares as well) that can only be created by two tiles, only three tiles, only four tiles, ... just eleven tiles.
Write the number of rectangular quadrangles for each amount of tiles 2, 3, 4, ... 11. If you have not found any rectangular quadrangle for particular number of tiles, write zero.

How many rectangles and squares are there?


Numbers of tiles / Numbers of squares and rectangles:

2
3
4
5
6

 

Numbers of tiles / Numbers of squares and rectangles:

7
8
9
10
11

 
Autor

  1. Andrej Jednička, Pardubice

 
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https://www.matika.in/en/show/pocet-ctyruhelniku

 
Successfull solvers

  1. René Procházka

  2. Lookkk and Ge88

  3. Eva Motyčková

  4. Happy Hydra

  5. lostomanosts

  6. Happy Hydra

  7. Tomáš.K

  8. Jindra super rychlík

  9. Jindra super rychlík

  10. HenryCraft

  11. Kristýnka

  12. HenryCraft

  13. Kateřina Koudelová

  14. Stellan

  15. Andrej Jednička, Pardubice