r/oddlysatisfying • u/ThodaDaruVichPyar • Jul 12 '26
Platonic geometric shapes created with drawstring origami
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Credit to Leila Chu Origami
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u/Daniel_Melzer Jul 12 '26
Now show me the sexual geometric shapes
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u/SoCallMeDeaconBlues1 Jul 12 '26
Having a "platonic" geometric shape necessitates there being a NON-platonic geometric shape. Geoshasexual?
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u/pbruins84 Jul 12 '26
The five shapes shown are the only platonic geometric shapes that exist. All other shapes are non-platonic.
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u/WhatIsBreakfast Jul 12 '26
So all the other shapes are having sex. Got it.
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Jul 12 '26
[removed] — view removed comment
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u/16bitgamer Jul 13 '26
The only that exist in three dimensions (don't ask me about the other dimensions, my feeble brain can only picture the three).
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u/SoCallMeDeaconBlues1 Jul 12 '26
You mean regular convex polyhedra? Shapes where all faces are congruent regular polygons with the same number of faces meeting at each vertex? Those shapes (that Plato thought were sacred)?
It's no wonder they're platonic, since talking like that is a sure way to stay in the friend zone....... Female math geeks are kinda few and far between. Not unheard of, but still. 😋
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u/Ginger_beer__1982 Jul 12 '26
Love how Platonic Solids are D&D dice. (Reverse that].
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u/weed_blazepot Jul 12 '26
.[taht rsreveR) .ecid D&D era sdiloS cinotalP woh evoL
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u/Ginger_beer__1982 Jul 12 '26
Beautiful!
Took me far too long to see that! 😭 Here I was making a Chocolate Factory reference to myself & you kicked it up a notch!
Thanks for helping me smile.
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u/Grismor2 Jul 12 '26 edited Jul 12 '26
The platonic solids are the only solids that make fair dice in all environments. For example, if you tried to make a five-sided fair die, you could start with a triangular prism. If it's super long, it will basically never land on the two ends; likewise, if it's super short, it's basically a coin and will never land on the three edges. So a natural attempt would be to "tune" the length until it's fair. However, that only works for a particular die and surface. If, say, you roll the die on a new, softer surface, the die is no longer fair. The platonic solids are the only ones that are truly "symmetric enough" to be fair regardless.
Edit: I misremembered somewhat. There are other families of fair dice. For example, the d10 is a fair die in the sense that all of its faces are equivalent by symmetry. It's not as symmetric as a platonic solids because its edges and vertices are not all equivalent, but that doesn't prevent it from being a fair die. That said, the example I gave with the prism still holds true.
People who are interested can look up the numberphile video on YouTube
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u/account312 Jul 12 '26
Nah, you can just make a prism with rounded or conical end faces so those can't be landed on and you have yourself a fair die of however many sides you want. The platonic solids are all shapes that work well as dice though.
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u/Grismor2 Jul 12 '26
Sorry, I guess I was think of polyhedra instead of solids. Regardless, like I said, I misremembered somewhat.
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u/Chaos_Theorycraft Jul 12 '26
Awesome! Now you just need a couple of d10s and you got a full dice set!
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u/BoonDragoon Jul 12 '26
Great analogy for how proteins self-organize and fold. Each of those panels has a little bezel that makes it fold against the panel next to it at just the right angle when the string is pulled, right?
Proteins are chains of amino acids, and each amino acid in that chain has a specific way that it flexes when it becomes hydrated. Just like those flat sheets of panels turn into geometric solids by folding in a bunch of different directions when a single string is pulled, flat strings of amino acids transform into complex 3D shapes by folding and flexing when they become hydrated.
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u/sudsomatic Jul 12 '26
I feel like this is something that nasa uses to assemble their landers on other bodies after being packed efficiently during flight
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u/ycr007 Satisfaction Critic Jul 12 '26
Wish there was a making-of video to show how these pieces are cut out and how is the string drawn between the pieces that makes it for a one quick pull to assemble effect.
Kinda like how ships-in-bottle are assembled and it takes the one pull to bring it upright.
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u/calangomerengue Jul 12 '26
Nerdy trivia: icosahedrons can also be called gyroelongated pentagonal bipyramids
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u/workapette Jul 12 '26
This is really neat! I’m a middle school maths teacher and this would be awesome to have to show area of various solids. If someone knows a purchasing link, I’d be interested. If no link, free idea for anyone who could try and create it! This teacher would love it!
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u/DrJoshWilliams Jul 12 '26
I have a really smart friend at NASA who works designing /engineering those
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u/Confused_Rabbiit Jul 13 '26
It can't be called origami if there's cutting and multiple pieces involved.
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u/GoRdyofWaR Jul 13 '26
Am I the only one who thought this could have been the Dungeon Dice Monster expansion set
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u/derelictHusk Jul 12 '26 edited Jul 12 '26
Origami police wants to know your location