Re: [Phys-L] triangular induction puzzle

[Anthony Lapinski <alapinski@pds.org>]

13

Interesting puzzle. Reminds me of the enslosed star puzzle.

On Wed, Oct 12, 2022 at 2:47 AM John Denker via Phys-l <
phys-l@mail.phys-l.org> wrote:

> Hi --
>
> Here is a puzzle that has been floating around recently:
>    https://av8n.com/physics/img48/tri-inference.png
>
> Given:
> The first figure has a score of 1.
> The second figure has a score of 5.
>
> Questions:
> a) What is the score of the third figure?
> b) How do you know?
> c) How sure are you?
>
> Remarks:
> * Hint: It's harder than it looks.
> * There's no physics in it per_se, but similar situations
>   arise in physics All The Time.
> * This is not a word game. No wise-guy dirty tricks. The
>   things that look like triangles are triangles. The things
>   that look to be congruent are congruent.
> * Imagine assigning this to your students. Think about
>   what you would infer from the various answers you get.
> * Hint: This can be used to illustrate an interesting
>   point, more interesting than the plain numerical answer.
> _______________________________________________
> Forum for Physics Educators
> Phys-l@mail.phys-l.org
> https://www.phys-l.org/mailman/listinfo/phys-l

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