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  • Members: 410
  • Category: Geometry
  • Founded: Dec 10, 2001
  • Language: English
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Messages 69 - 98 of 1736   Oldest  |  < Older  |  Newer >  |  Newest
Messages: Simplify | Expand Author Sort by Date ^
69 equation300 Send Email Dec 6, 2002
11:54 am
I realy should have deffined the question i guess.After searching for a way to remember the position of a given number effectively any number that you care to...
70 Paul Erlich <paul@...
emotionaljou... Send Email
Dec 8, 2002
3:07 am
i need 3D coordinates of vertices, preferably for the figure with 60 isosceles triangles each with height:base = 5:6. then i can show what the map looks like...
71 paul26e <Paul26e@....
paul26e Send Email
Dec 10, 2002
6:20 pm
Hello all, I've just joined this group and thought I'd plunge in with a question: Is there a good or elegant way to plaid the surface of a tetrahedron (or any...
72 Edward Moore
emoore06905 Send Email
Dec 10, 2002
8:37 pm
My solution to this is to alter your view of why plaiding a cube works. The stripes are not just perpendicular to each other, they are parallel to the edges....
73 green@... Send Email Dec 10, 2002
9:56 pm
paul, here's a woven stellated octahedron i made. perhaps it will show you some new ways in which to find more such polyhedral weavings. -melinda...
74 dan duddy
polychoron Send Email
Dec 11, 2002
7:32 pm
--a bit related to the plaid polyhedra idea-- Jay Bonner created an amazing paper polyhedra kit called Geodazzlers which neatly pop out of preforated pages and...
75 Paul K
paul26e Send Email
Dec 12, 2002
1:53 pm
Thanks for all the responses to my question! I'm intending to use strips of clay, by the way, around a paper polyhedron. The kiln will burn off the paper and...
76 Jon Perry
jon_perryuk Send Email
Dec 13, 2002
6:18 pm
Anyone know of a proof that a square/rectangle cannot be divided into entirely right-angled triangles, such that no smaller square/rectangle is produced? Jon...
77 Jon Perry
jon_perryuk Send Email
Dec 13, 2002
6:20 pm
(doesn't gel that well) Anyone know of a proof that a square/rectangle cannot be divided into entirely right-angled triangles, such that no square/rectangle is...
78 Jon Perry
jon_perryuk Send Email
Dec 13, 2002
6:23 pm
Anyone know of a proof that a square/rectangle cannot be divided into entirely right-angled triangles, such that no square/rectangle is produced by a 2 of the...
79 Jon Perry
jon_perryuk Send Email
Dec 13, 2002
6:24 pm
Anyone know of a proof that a square/rectangle cannot be divided into entirely right-angled triangles, such that no square/rectangle is produced by any 2 of...
80 berglunddj@...
berglunddj Send Email
Dec 16, 2002
2:19 pm
Hi, Here's a counter example. John...
81 Jon Perry
jon_perryuk Send Email
Dec 16, 2002
6:12 pm
Thanks. The simplest counter-example found is attached. Jon Perry perry@... http://www.users.globalnet.co.uk/~perry/maths/ ...
82 Paul Erlich <paul@...
emotionaljou... Send Email
Dec 19, 2002
12:11 am
... 60 ... well, i cheated and just made all the vertices equidistant from the center. looks basically like the real thing. here's the result: ...
83 polychoron <polych...
polychoron Send Email
Dec 19, 2002
3:00 am
hello Polytopians, I have been uploading various images that i have been collecting over the last year or so to the Files section of Polytopia. There are...
84 Paul Erlich <paul@...
emotionaljou... Send Email
Dec 19, 2002
9:57 pm
hi dan . . . hope you liked my make-your-own pentakis-dodecahedron-globe project. if you're interested in how higher-dimensional geometry relates to other...
85 Jon Perry
jon_perryuk Send Email
Dec 26, 2002
7:34 pm
A paper on, at: http://www.users.globalnet.co.uk/~perry/maths/chessgraph/chessgraph.htm Jon Perry perry@... ...
86 Robert Angus <angi...
angilluminati Send Email
Dec 31, 2002
9:45 am
Thank you all for the wonderful information you have provided me with thus far. I would also like to add that any magickians involved herein please consider...
87 phi16 <allenlubow@...
phi16 Send Email
Jan 20, 2003
10:54 pm
Can anyone recommend such software. I would like to be able to work with a three-dimensional x,y,z coordinate system using a computer program on a Macintosh to...
88 Paul Erlich <paul@...
emotionaljou... Send Email
Jan 23, 2003
12:28 am
... some of the best programs for these sorts of things are mathematica and matlab. these may be out of your budgetary range, but both have tons of great...
89 allenlubow@...
phi16 Send Email
Jan 23, 2003
1:56 pm
Mathematica is a bit pricey but I wouldn't mind if it would allow me to do what I want. How difficult is the learning curve?...
90 Jon Perry
jon_perryuk Send Email
Jan 23, 2003
3:49 pm
'Mathematica is a bit pricey but I wouldn't mind if it would allow me to do what I want. How difficult is the learning curve?' Have a look at: ...
91 Jon Perry
jon_perryuk Send Email
Feb 5, 2003
9:01 pm
Comments appreciated; http://www.users.globalnet.co.uk/~perry/maths/integraldrawing/integraldrawin g.htm Jon Perry perry@... ...
92 Jon Perry
jon_perryuk Send Email
Feb 5, 2003
9:51 pm
'are you sure the conjecture doesn't require that all edges be straight lines?' They are all straight lines, but I think you are right in essence - the ...
93 Michelle
fruitworks1026 Send Email
Mar 9, 2003
12:37 am
Hi all, I'm new to this group adn I'd to ask something about the mobius strip. If one were to cut along its equator is it true that it results in two twists...
94 John Berglund
anisohedral Send Email
Mar 9, 2003
1:19 pm
Hi Michelle, Any time that you have an odd number of half twists the form has only one edge. If you cut any of these shapes down the middle, you add an extra...
95 Michelle
fruitworks1026 Send Email
Mar 9, 2003
7:09 pm
Thanks very much. Now I'm not so confused because there are 2 full twists, and 4 half twists. When i read on the net these two different numbers, I was...
96 rocky10019 Send Email Apr 6, 2003
6:54 pm
http://snowflakebentley.com/...
97 nicholasshea Send Email Apr 9, 2003
5:34 pm
Hi Polytopians i am new to this group - it looks great! On to my plea fro help... i am currently developing a program called TesselSphere which generates...
98 John Berglund
anisohedral Send Email
Apr 9, 2003
9:46 pm
Hi, I looked at some pictures of it. It seems that each face of the icosahedron that is the underlying framework of this dome is divided into 192 equilateral...
Messages 69 - 98 of 1736   Oldest  |  < Older  |  Newer >  |  Newest
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