Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

120-Year-Old Math Mystery Finally Solved – Dudeney’s Dissection Proven Optimal!
Scitech Daily ^ | March 13, 2025 | Japan Advanced Institute of Science and Technology

Posted on 03/13/2025 5:19:35 AM PDT by Red Badger

click here to read article


Navigation: use the links below to view more comments.
first 1-2021-24 next last
Now I can finally sleep at night!...........................
1 posted on 03/13/2025 5:19:35 AM PDT by Red Badger
[ Post Reply | Private Reply | View Replies]

To: SunkenCiv

Ping?.........................


2 posted on 03/13/2025 5:19:53 AM PDT by Red Badger (Homeless veterans camp in the streets while illegals are put up in 5 Star hotels....................)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Red Badger

What a relief!


3 posted on 03/13/2025 5:25:08 AM PDT by READINABLUESTATE (‘Never trust a man whose uncle was eaten by cannibals’)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Red Badger

I always just used a blender.


4 posted on 03/13/2025 5:29:58 AM PDT by Larry Lucido (Donate! Don't just post clickbait!)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Red Badger

Wake me when bureaucrats accept that Milton Friedman had the optimal solution to debt & inflation.


5 posted on 03/13/2025 5:54:07 AM PDT by logi_cal869 (-cynicus the "concern troll" a/o 10/03/2018 /!i!! &@$%&*(@ -)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Red Badger

I don’t feel so bad. I’m still working on my algebra homework.


6 posted on 03/13/2025 6:12:07 AM PDT by rey
[ Post Reply | Private Reply | To 1 | View Replies]

To: Red Badger

Glad this is solved.
Now for that single red sock that is missing from my laundry.


7 posted on 03/13/2025 6:15:24 AM PDT by HereInTheHeartland (“I don’t really care, Margaret.”)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Red Badger

[[Mathematicians have proven that Henry Dudeney’s 1907 four-piece dissection of an equilateral triangle into a square is optimal]]

Pffft, I coulda told them that decades ago, but no one bothered to ask me! (I kid, I am terrible at maths)


8 posted on 03/13/2025 6:16:33 AM PDT by Bob434 (...Time flies like an arrow, fruit flies like a banana)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Red Badger

9 posted on 03/13/2025 6:31:10 AM PDT by Magnum44 (...against all enemies, foreign and domestic... )
[ Post Reply | Private Reply | To 1 | View Replies]

To: HereInTheHeartland

Had a dog that routinely ate socks. Get a new pair.


10 posted on 03/13/2025 6:37:15 AM PDT by sasquatch (Do NOT forget Ashli Babbit! c/o piytar)
[ Post Reply | Private Reply | To 7 | View Replies]

To: Red Badger

Tangrams were always fun...


11 posted on 03/13/2025 7:03:14 AM PDT by Openurmind
[ Post Reply | Private Reply | To 1 | View Replies]

To: Red Badger; 6SJ7; AdmSmith; AFPhys; Arkinsaw; allmost; aristotleman; autumnraine; bajabaja; ...
Yeah, wth, it seems optimal to throw four pieces of equilateral caution to the winds and ping it.


· List topics · post a topic · subscribe · Google ·

12 posted on 03/13/2025 7:59:55 AM PDT by SunkenCiv (Putin should skip ahead to where he kills himself in the bunker.)
[ Post Reply | Private Reply | View Replies]

The rest of the rather small 'geometry' keyword, sorted:

13 posted on 03/13/2025 8:08:12 AM PDT by SunkenCiv (Putin should skip ahead to where he kills himself in the bunker.)
[ Post Reply | Private Reply | View Replies]

To: Red Badger
Mathematicians have proven that Henry Dudeney’s 1907 four-piece dissection of an equilateral triangle into a square is optimal.

I can't tell you how many bar bets I've won because I knew this.

14 posted on 03/13/2025 8:11:22 AM PDT by GreenHornet
[ Post Reply | Private Reply | To 1 | View Replies]

To: rey

I don’t feel so bad. I’m still working on my algebra homework.

Well, my dog ate my homework.


15 posted on 03/13/2025 8:17:42 AM PDT by rdl6989
[ Post Reply | Private Reply | To 6 | View Replies]

To: Red Badger

A square has 4 corners. If you cut up an equilateral triangle trying to make a square you have to have at least four pieces.How else are you going to arrive at 4 corners?


16 posted on 03/13/2025 8:45:16 AM PDT by Nateman (Democrats did not strive for fraud friendly voting merely to continue honest elections.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: GreenHornet
I can't tell you how many bar bets I've won because I knew this.

Zero?

17 posted on 03/13/2025 10:15:47 AM PDT by Verginius Rufus
[ Post Reply | Private Reply | To 14 | View Replies]

To: Red Badger

More winning from Trump!


18 posted on 03/13/2025 10:16:09 AM PDT by Verginius Rufus
[ Post Reply | Private Reply | To 1 | View Replies]

To: Verginius Rufus
I can't tell you how many bar bets I've won because I knew this.

Zero?

Wow! Right on the nose!

19 posted on 03/13/2025 10:59:05 AM PDT by GreenHornet
[ Post Reply | Private Reply | To 17 | View Replies]

To: Nateman
How else are you going to arrive at 4 corners?

an equilateral triangle cut in to two pieces will produce 1 piece with 4 corners and 1 piece with 3 corners (one case - bisected - will produce to congruent triangles - each with 3 corners).

20 posted on 03/13/2025 11:50:21 AM PDT by goo goo g'joob (When honest people say what's true, calmly and without embarrassment, they become powerful)
[ Post Reply | Private Reply | To 16 | View Replies]


Navigation: use the links below to view more comments.
first 1-2021-24 next last

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson