Search found 83 matches
- Sun Nov 04, 2012 9:42 pm
- Forum: Polyhedra
- Topic: Gilson: Polyhedra - A New Approach
- Replies: 20
- Views: 95915
- Sun Nov 04, 2012 9:40 pm
- Forum: Polyhedra
- Topic: Gilson: Polyhedra - A New Approach
- Replies: 20
- Views: 95915
- Sun Nov 04, 2012 5:22 pm
- Forum: Polyhedra
- Topic: Gilson: Polyhedra - A New Approach
- Replies: 20
- Views: 95915
http://i112.photobucket.com/albums/n174/oxenholme/equatorialpentagons.jpg And here is my dreadful attempt at some equatorial pentagons. I used two pieces of card, sort of heptagonal with the pentagons round the periphery. Gloriously inaccurate, but it's more exploratory than anything else. Next ste...
- Thu Nov 01, 2012 6:37 am
- Forum: Polyhedra
- Topic: Gilson: Polyhedra - A New Approach
- Replies: 20
- Views: 95915
What do you want to make the equatorial pentagons coplar to - I don't see how it can be coplanar or in a parallel plane to any of the larger petagons. For example, starting with the white equatorial pentagon, how would you navigate to the coplanar pentagon ? I'll listen out at the weekend, but you ...
- Wed Oct 31, 2012 1:24 pm
- Forum: Polyhedra
- Topic: Gilson: Polyhedra - A New Approach
- Replies: 20
- Views: 95915
I think Chapter 24 contains some equations or whatever they are - it keeps on saying it's simple - for the dimensions of the two types of pentagon. I wouldn't have a clue how to use them. I wonder if one way would be to make a couple of seven sided "pyramids" , and to mount them on a pencil or the l...
- Mon Oct 29, 2012 10:58 am
- Forum: Polyhedra
- Topic: Gilson: Polyhedra - A New Approach
- Replies: 20
- Views: 95915
- Tue Oct 02, 2012 8:43 am
- Forum: Polyhedra
- Topic: Gilson: Polyhedra - A New Approach
- Replies: 20
- Views: 95915
- Thu Mar 15, 2012 11:13 am
- Forum: Polyhedra
- Topic: Icosahedon 5 compound - anyone tried making one?
- Replies: 7
- Views: 41005
- Wed Mar 14, 2012 8:58 am
- Forum: Polyhedra
- Topic: Icosahedon 5 compound - anyone tried making one?
- Replies: 7
- Views: 41005
- Mon Mar 05, 2012 2:17 pm
- Forum: Stella Forum
- Topic: Please tell us about your polyhedra and post photos!
- Replies: 1
- Views: 13773
Please tell us about your polyhedra and post photos!
I've been fascinated by polyhedra ever since 1961 or thereabouts when I got introduced to them at school. From time to time I post photos of my own polyhedra on here (via Photobucket) - Peter Kane shows some of his too. Please tell us about some of the polyhedra that you've been making, and post pho...
- Mon Mar 05, 2012 2:10 pm
- Forum: Polyhedron Models
- Topic: Can you see what this is ?
- Replies: 3
- Views: 33243
This polyhedron is one of 5 that I intend to make. Its tetrahedral equivalent is a stellation of the regular dodecahedron. I made it last year. Its octahedral and cubic equivalents are both stellations of the pentagonal icositetrahedron. I made both a year or two ago. Its icosahedral equivalent is a...
- Mon Mar 05, 2012 2:02 pm
- Forum: Stella Forum
- Topic: 2 Newbie questions
- Replies: 2
- Views: 17033
Is the mitre angle the angle you would need on the edges if you were to make the polyhedron from a material thick enough to need mitring? The Cube's dihedral angle is 90 degrees, so the mitre angle is half - i.e. 45 degrees. My last computer died a death, so I haven't got Stella at the moment, so I ...
- Mon Mar 05, 2012 1:59 pm
- Forum: Polyhedra
- Topic: Icosahedon 5 compound - anyone tried making one?
- Replies: 7
- Views: 41005
Five Icosahedra looks a pain to make in such a manner that the end result is rigid. I fancy having a go. The problem being that the "trough" double tabs (thirty of them) are not continuous colourwise. It will take a lot of care adding reinforcement without getting balsa cement where it shouldn't be....
- Fri Mar 02, 2012 9:33 am
- Forum: Polyhedra
- Topic: Icosahedon 5 compound - anyone tried making one?
- Replies: 7
- Views: 41005
I've made the compounds of 5 dodecahedra and 5 rhombic triacontahedra, but not 5 icosahedra. Sadly yet another computer has bitten the dust, so I no longer have access to Stella, but I've made several polyhedral compounds with coplanar pairs of faces. I've always split the common area down so that t...
- Mon Jan 31, 2011 7:56 am
- Forum: Stella Feature Requests
- Topic: Colouring Snubs
- Replies: 7
- Views: 43578
I made that snub many moons ago using plain white card. Seeing the colour representations above has whet my appetite to having a go at making it in colour. I would need six colours for the pentagrams and pentagons, another ten colours for the icosahedral triangles. Would I get away with the standard...