#icosahedron — Public Fediverse posts

Keeping Time on Tumbling Icosahedra

https://fed.brid.gy/r/https://hackaday.com/2026/09/13/keeping-time-on-tumbling-icosahedra/

Schickes Kunstwerk in Hamburg hinterm Rathaus. Von wem ist das?

#Ikosaeder #Icosahedron

stellated icosahedron
made from some toy we found?
might have got it at an estate sale

#geometry #icosahedron #d20

Icosahedral Stereograph!

#stereogram #icosahedron

#RStats triangle rasterizer with realtime rendering in Base R with {grid} graphics

Code:
https://github.com/coolbutuseless/platonic

#icosahedron

@bojidar_bg Thanks! 😀

For anyone else who wants to make an origami Jitterbug, instructions are at https://www.foldworks.net/home/diagrams, specifically https://foldworks.net/wp-content/uploads/2018/06/jitterbug.pdf. Other instructions and videos are available elsewhere (some approved by me, some not).

#origami #MathArt #papercraft #MathArt #geometry #toy #octahedron #cuboctahedron #icosahedron #ModularOrigami #craft

#2025 #6+girls #absurdres #aiko_(less) #alcohol #amaya_(anom3dsculptor) #animal_costume #animal_ear_headphones #animal_ears #animal_print #annotation_request #apron #ariel_(disney) #ariel_(disney)_(cosplay) #arknights #armor #asphyxiation #asutora-chan #bar_(place) #beholder #black_dragon_girl_(distr) #black_hair #black_queen_(creibis) #blonde_hair #blue_hair #blue_skin #blush #bon_(vtuber) #book #bookshelf #borrowed_character #bouken_ni_ha_buki_ga_hitsuyou_da!_~kodawari_rudi_no_kajiya-gurashi~ #bound #breasts #broly_culo_(meme) #brown_hair #buffet #centurii-chan #centurii-chan_(character) #character_request #cheerleader #chibi #chibi_only #chibikko_(morihito) #chloe_(srgrafo) #closed_eyes #closed_mouth #coldstream_(marinerx) #colored_skin #commentary #controller #cooking #cosplay #couch #cow_costume #cow_print #creator_(neneneqo) #cressey_(porforever) #cunnilingus #dakimakura_(object) #dark-skinned_female #dark_skin #drowning #drunk #emma_llama #emmelot_(wassnonnam) #english_commentary #erika_(popopoka) #everyone #eylin_eyla_(ebonyxh) #fake_animal_ears #fallenshadow #flayne_(basedbinkie) #florks #flushed_face_emoji_shirt_(meme) #food #fran_(gudanco_(nyanmeowzer)) #fried_rice_prank_(meme) #front_twin_braids_sister_(ironlily) #full_body #furry #furry_female #game_console #glass_bottle #glasses #goggles #gradient_hair #green_hair #grey_hair #gunpla #hanging #happy_new_year #hat #hazelin_hellfire #headphones #heart_pasties #highres #holding #holding_pom_poms #holding_shield #holding_sword #holding_weapon #horns #huge_breasts #icosahedron #indie_virtual_youtuber #innertube #instrument #isometric #jerry_(jeminix2) #june_(hyyun_ho) #kamura_(rain_prophet) #karinn_(ka941) #kei_(m_k) #kidouko_(zakusi) #kimiko_(zakusi) #kin_(senukin) #krekkball #kura-tan_(mikoscrub) #kyoko_(madaotheory) #large_breasts #lily_(tostantan) #liquor #little_blue_(guin_guin) #long_hair #luise_(pixel_princess_blitz) #lyra_(wingedwasabi) #macci_(possummachine) #maid #maid_apron #maid_headdress #malyna_(malberrybush) #mao-chan_(mao_comicartlab) #marianne_(beef_dong) #marimari_(vtuber) #medium_breasts #medium_hair #meme #mephi_(yeougui) #meruccubus_(merunyaa) #mint_castella #miroslava_vasilyeva_(shuuko) #model_kit #mozumi_pichi #multicolored_hair #multiple_girls #music #nally_(vtuber) #nana_(xerbatt) #natalina_(nayt_layt) #nigel_thornberry #null-chan_(mattyan) #nurse #nurse_cap #on_couch #one_eye_closed #open_mouth #oral #orange_hair #orca_(chonkyorca) #original #pami_namal_(wingedwasabi) #parted_lips #partially_submerged #partially_translated #pasties #phase_connect #piano #pictish_witch_(anonhistory) #pillow #pink_hair #pipkin_pippa #plant #plate #platinum_dragon_girl_(distr) #playing_games #playing_instrument #playing_piano #playing_video_games #playstation_2 #playstation_5 #playstation_controller #pointy_ears #pom_pom_(cheerleading) #pool #potted_plant #purple_hair #rachel_(seisou_fude_no_tabibito) #raiko_(lieumare) #real_life #red_hair #red_skin #rena_(tcv_cosmic) #reviewbrah #rika_(m_k) #rikudo_yayoi #ripley_(nudiedoodles) #rudy_(bouken_ni_ha_buki_ga_hitsuyou_da!_~kodawari_rudi_no_kajiya-gurashi~) #rukia_(rukiadaichi) #saki_(the_atko) #sami_(noxtwice) #saruei_(vtuber) #saruei_(vtuber)_(valentine) #shark_kuma-chan_(shake_shakepost) #sharp_teeth #shield #short_hair #sink #sitting #sky_above_me_(vtuber) #sophie_(popopoka) #standing #stella_(murgoten) #suzuran_(arknights) #swim_ring #swimming #sword #table #tachikawa_nobuo #tail #teeth #television #termichan_(not-a-bot) #the_little_mermaid_(disney) #the_wild_thornberrys #tied_up_(nonsexual) #translation_request #ts_loli_oji-san_no_boukan #tyra_(dijor98) #veronica_(doctorloops) #vi_(yellyvi) #virtual_youtuber #wading #weapon #whiskey_project #wings #yuri #yuu_(shokushi_yuu) https://danbooru.donmai.us/posts/8644393

Sierpinski triangles on an icosahedron, inspired by Ghee Beom Kim

#sierpinskitriangle #icosahedron #geometricart #fractal #fractalart #iteratedfunctionsystem #3dgraphics #raymarching #pythoncode #numpy #opengl #algorithmicart #algorist #mathart #laskutaide #ittaide #kuavataide #iterati

@ark_brut A wonky six-strut tensegrity icosahedron. A first attempt that took way longer than expected

#tensegrity #icosahedron #photography #craft #PaperCraft #geometry #MathArt #design

@mrdk @unnick And here’s the rhombic triacontahedron for the dodecahedron/icosahedron (again without scaling the bars to have constant length).
#MathArt #geometry #animation #loop #geogebra #dodecahedron #icosahedron #3d

I couldn’t resist making this in Geogebra: morphing between a regular icosahedron and a regular dodecahedron.

h/t @unnick https://mathstodon.xyz/@unnick@booping.synth.download/114350750053349050

#MathArt #geometry #animation #loop #geogebra #icosahedron #dodecahedron #polyhedra #3d

@barefootstache
Don't forget to do the knobbly bits in the corners.
#icosahedron #Roman #maths #mystery
https://www.ancient-origins.net/artifacts-other-artifacts-news-unexplained-phenomena/enigma-roman-dodecahedra-002371

The polyhedra I have been making are hollow. I thought I would experiment with putting lights inside of them. I designed a quick triangular key pattern for the latticework.

This uses a simple circuit made with a Chibitronics Circuit Sticker, a 1216 coin cell, some copper tape and, some washi tape.

#LaserCut #LaserCutter #Polyhedra #Polyhedron #Icosahedron #CelticArt #CelticDesign #KeyPattern #PaperElectronics

Please enjoy pondering my icosa-orb.

This uses a simple circuit made with a Chibitronics Circuit Sticker, a 1216 coin cell, a reed switch and, a tiny piece of laser-cut plywood.

Process video coming soon!

#LaserCut #LaserCutter #Polyhedra #Polyhedron #Icosahedron #CelticArt #CelticDesign #KeyPattern #PaperElectronics

Mother of pearl icosahedron for my pearl of a mother on Mother’s Day!

#LaserCut #LaserCutter #Polyhedra #Polyhedron #Icosahedron #MotherOfPearl

Cork icosahedron. Displayed here on a zebrawood reliquary. I keep thinking of different materials for the polyhedra.

#LaserCut #LaserCutter #Polyhedra #Polyhedron #Icosahedron #Cork

A few seconds of the engraved wooden icosahedron rotating.

#LaserCut #LaserCutter #Polyhedra #Polyhedron #Icosahedron #Celtic #CelticArt #CelticDesign #KnotWork #CelticKnot #DiceGoblin

I see a lot of icosahedra with numbers on the faces. I thought I would try engraving one of the wooden ones with those. I didn’t want it to be too plain. So, I made some knotwork to go around the numbers.

#LaserCut #LaserCutter #Polyhedra #Polyhedron #Icosahedron #Celtic #CelticArt #CelticDesign #KnotWork #CelticKnot #DiceGoblin

A quick orbit around the icosahedron.

#LaserCut #LaserCutter #Polyhedra #Polyhedron #Icosahedron

It seems like people like icosahedra for some reason. I made an icosahedron with wood panels using the new technique. This is about 6cm (2.25 inches).

#LaserCut #LaserCutter #Polyhedra #Polyhedron #Icosahedron

Day 22 - Movable

how rigid we are

is infinitesimally

movable — a flex

on codepen: https://codepen.io/fractalkitty/pen/NWoWOQq/0bc5fe606b4eadd565e1dd6782cf30f0?editors=0010

I learned to use p5.geometry and got code for making model work here: https://www.paulwheeler.us/articles/custom-3d-geometry-in-p5js/

Jessen's icosahedron was created by using vertices in this file: https://commons.wikimedia.org/wiki/File:Jessen_icosahedron.stl

#mathober2023 #movable #jessen #icosahedron

https://youtube.com/watch?v=5HVK55hEtjk&si=-Iov-UeMUAmQaKAx

#d20 #amethyst #lapidary #stunning #icosahedron

@coreyspowell The Platonic solids were all understood by Greeks many centuries before this. Nothing mysterious here. #icosahedron #dodecahedron

#Dymaxion #Folding #Globe from #Areaware, before and after

https://www.areaware.com/products/dymaxion-folding-globe?variant=21946826244 (also available in black and white)

The story behind the #design: https://www.ravenhillstudio.com/story/dymaxion-globe

#BuckminsterFuller #Bucky #ShojiSadao #BrendanRavenhill #DymaxionProjection #RaleighProjection #map #cartography #Earth #planet #foldaform #icosahedron #polyhedron #geometry #geodesic

For those of you who have regular tetrahedra-packing on your minds because of @johncarlosbaez’s post (https://mathstodon.xyz/@johncarlosbaez/109739769180023737), here is a reminder of how irritated I am that a regular #icosahedron cannot be constructed from 20 regular #tetrahedra.

For some reason, I occasionally feel the need to mention that again…and again…😁.

:icosahedron: #icosahedron

@valhund I am reminded of a young Bucky Fuller (who did not yet have much-needed glasses yet) being sent from the primary school exercise with peas and toothpicks to the principal's office with his first ##icosahedron (other kids were building "normal" wobbly cubes). I like your triangles sculpture!

All edge lengths are the same. And nothing ist round here.

#Hedron #Polyhedron #Prism #Icosahedron #Animation #PerfectLoop #Math #Geometry #3D #Solid #Topology #Crystal

Today a made this from regular triangles, squares, regular pentagons and ⁷⁄₃₀ rhombs.

#Hedron #Polyhedron #Prism #Icosahedron #Animation #PerfectLoop #Math #Geometry #3D

Here is the rad icos, it seems related to rad dodo in this weird way https://mathstodon.xyz/@HypercubicPeg/109388379669082143

#icosahedron #mathart #3Dart #opticalillusions #symmetry #radial #circles #geometricart #polyhedra #geometry #art #geometric #mathsart #moirePattern

I think is true...it is something that I stumbled upon about 5 years ago while constructing these things https://mathstodon.xyz/@HypercubicPeg/109370268881128440.

What do you think @panlepan?

#geometry #icosahedron #dodecahedron #polyhedra #mathart #mathsart #symmetry #radial #circles #circumcircle #mathConjecture