Find the Number of Triangles

  • Context: Undergrad 
  • Thread starter Thread starter bob012345
  • Start date Start date
  • #31
Wondering if this is how Garret Lissi got his start.

{edit}
I finally counted 160....

1767352449187.webp
 
Last edited:
  • Like
Likes   Reactions: bob012345
Mathematics news on Phys.org
  • #32
My artwork isn’t as pretty but here it is anyway. Each size triangle is represented only once. There are four shapes out of 22 that are left-right symmetric wrt to the whole figure are multiplied by 4 and the rest by 8.
IMG_4659.webp
 
  • Like
Likes   Reactions: OmCheeto
  • #33
bob012345 said:
My artwork isn’t as pretty but here it is anyway. Each size triangle is represented only once. There are four shapes out of 22 that are left-right symmetric wrt to the whole figure are multiplied by 4 and the rest by 8.
...
At least you didn't screw up. I've just noticed multiple errors in my image. Glad I said it would take me a week to count all these stinkin' triangles!
 
  • Like
Likes   Reactions: bob012345
  • #34
One take-away from this is how rapidly a simple problem can become unmanageable. Combinatorial problems grow exponentially and the slightest modification can make the calculations very difficult. By "unmanageable", I mean it might take a supercomputer decades to solve.
 

Similar threads

  • · Replies 20 ·
Replies
20
Views
5K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 10 ·
Replies
10
Views
3K
Replies
4
Views
2K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
Replies
1
Views
2K
  • · Replies 9 ·
Replies
9
Views
2K