Polyhedral Solids (perhaps that's redundant, but it gets the point across.
Dedicated to Archimedes.
There are 3 classes of sorta-regular solids
(polyhedrons) ...
1.- all faces are the same regular polygon
-- there are only 5 of these, see at ...
http://mathforum.org/alejandre/applet.polyhedra.html
2.-
all faces are a regular polygon (but not the same one) there are a
LOT of these -- like domes and soccer balls
3.- all faces
are the same polygon (but not necessarily regular ones)
See
more at ...
http://illuminations.nctm.org/ActivityDetail.aspx?ID=125
There
are some cut outs at ...
http://isotropic.org/polyhedra/
(the most familiar 18 of Types 1 & 2)
http://www.senteacher.org/wk/3dshape.php
(but only 4 of the 5 possible type 1's.)
There are some very
good examples( 30 of types 1, 2, & 3)
--
which even can EVEN BE ROTATED in
3-D at ...
http://jcrystal.com/steffenweber/
http://jcrystal.com/steffenweber/POLYHEDRA/
http://jcrystal.com/steffenweber/POLYHEDRA/p_00.html
See
also --
http://mathforum.org/mathtools/cell/m6,8.12.1,ALL,ALL/
http://www.fi.uu.nl/toepassingen/00297/toepassing_wisweb.en.html
http://web.aanet.com.au/robertw/Stella.html
http://web.aanet.com.au/robertw/PolyNav/PolyNavigator.html
http://www.google.com/search?hl=en&q=polyhedrons+cutouts
http://www.crystalinks.com/archimedes.html
http://www.georgehart.com/pavilion.html
http://www.georgehart.com/virtual-polyhedra/zometool.html
http://www.georgehart.com/virtual-polyhedra/synestructics.html
http://www.georgehart.com/virtual-polyhedra/naming.html
http://en.wikipedia.org/wiki/Polyhedron
==============================================
Having nearly always been fascinated by regular
geometric figures, I set out to
classify them somehow
and comment on them, but discovered that it had already been done.
So, what follows is a list WebSites which more than takes
care of the subject and is
far above my poor power to
add or detract.
(apologies to Abe
Lincoln)
http://en.wikipedia.org/wiki/Platonic_solid 5
http://en.wikipedia.org/wiki/Archimedean_solid 13
http://en.wikipedia.org/wiki/Johnson_solid 92
http://en.wikipedia.org/wiki/Catalan_solid
http://en.wikipedia.org/wiki/Prism_%28geometry%29 inf
http://en.wikipedia.org/wiki/Antiprism inf
http://en.wikipedia.org/wiki/Quasiregular_polyhedron
http://en.wikipedia.org/wiki/Snub_polyhedron
http://en.wikipedia.org/wiki/Truncated_polyhedron
w/progression
http://en.wikipedia.org/wiki/Polyhedral_compound
---
http://en.wikipedia.org/wiki/Kepler-Poinsot_polyhedron
++
http://en.wikipedia.org/wiki/Regular_polytope
http://en.wikipedia.org/wiki/List_of_regular_polytopes
http://en.wikipedia.org/wiki/Metatron%27s_Cube
http://en.wikipedia.org/wiki/Goldberg_polyhedron
http://en.wikipedia.org/wiki/Conway_polyhedron_notation
http://en.wikipedia.org/wiki/Kepler-Poinsot_polyhedron
http://en.wikipedia.org/wiki/Toroidal_polyhedron
http://en.wikipedia.org/wiki/Zonohedron
http://en.wikipedia.org/wiki/Tesseract
http://mathworld.wolfram.com/letters/
<== alphabetical
listing
http://mathworld.wolfram.com/Tetrahedron.html
no images??
http://mathworld.wolfram.com/Octahedron.html
http://mathworld.wolfram.com/Cube.html
http://mathworld.wolfram.com/Dodecahedron.html
http://mathworld.wolfram.com/Icosahedron.html
http://mathworld.wolfram.com/TetrahedralGraph.html
http://mathworld.wolfram.com/CubicGraph.html
http://mathworld.wolfram.com/OctahedralGraph.html
http://mathworld.wolfram.com/DodecahedralGraph.html
http://mathworld.wolfram.com/IcosahedralGraph.html
http://mathworld.wolfram.com/Cube5-Compound.html
http://en.wikipedia.org/wiki/Project_Euler
===========================
My interest was
recently re-kindled when a classmate sent me an E-Mail with the
subject of
“The Beauty of
Mathematics”
which linked to ...
http://www.youtube.com/watch_popup?v=h60r2HPsiuM
http://www.youtube.com/watch_popup?v=h60r2HPsiuM&feature=youtube_gdata_player
which starts w/ 12345x8+5=98765 etc etc and ends with an
inspirational message,
after which
it then offers a LOT of miscellaneous random choices one of which
leads to
a linked set of videos
under the title of “The
Beauty of Mathematics - You Tube”.
Following all of the links is very interesting, but the
address-line/URL never changes,
so I had NO way to get back to some of the heart of the material.
By
trail and error I finally got to ...
http://www.youtube.com/watch?v=ZOqg5bPZ0HE
which is a lecturer with neat wall hangings.
After which there is another set, one of which
is
http://www.youtube.com/watch?v=f81ZEVO6Btw
Then, too there are still more interesting WebSites to
explore, as at
...
https://www.google.com/#q=%22beauty+of+mathematics%22
http://videos.sacredgeometryweb.com/category/shape/platonic-solids/
http://videos.sacredgeometryweb.com/snub-cuboctahedron/
https://www.google.com/#q=flower+of+life+masonic+secrets+sacred+geometery
http://peda.com/poly
http://mathsci.kaist.ac.kr/~drake/tes.html
http://michael-hogg.co.uk
------------
http://www.world-mysteries.com/sar_sage1.htm
http://en.wikipedia.org/wiki/Fibonacci_number
http://oeis.org/A001622
http://video.mit.edu/watch/metamorphosis-of-the-cube-12077/
http://mit.tv/NN5mLe
https://www.google.com/#psj=1&q=vertices+edges+faces
http://www.ezschool.com/Math/Shapes/ws12.html
Other
terms and concepts ---
# of vertices, edges, faces
FVE EFV FEV VEF
dual duality
prism
anti-prism
prism or antiprism.
truncated snub
star
stellated
================================
N.B.::
1.
The majority of these solids can be morphed into related but
different geometries by ...
[ see at
http://en.wikipedia.org/wiki/Truncated_polyhedron
]
a1 .- filing off the vertices to
increase the number of faces by the number of vertices;
then the result is said to be a TRUNCATED solid.
a2 .- when the new lengthening/emerging edges equal the
shortening/disappearing edges;
then the result is said to be a UNIFORM TRUNCATED solid.
a3 .- continued filing will eventually result in the new faces
meeting each other
as some of the shortened edges reach a length of zero;
then the result is said to be a RECTIFIED TRUNCATED solid.
b1 .- building pyramids on the faces to
increase the number of faces
by the twice the number of edges, while original
faces disappear
b2 .- continued
heightening the pyramids will increase the length of the new
edges;
for n<6 sides/face of the original, the edge length will get to be
equal to the orig edges.
for n>6 sides/face of the original, the edge length will always be
greater than the orig edges.
b3 .-
continued heightening the pyramids will eventually result in the new
faces
becoming co-planar, which will cut the total number of faces in
half
and make all of the orig edges disappear.
b4
.- in some cases b2 & b3 may occur at the same height.
b5 .- continuing beyond b3 will violate the requirement
of being convex.
2. There are 43380 distinct nets for the
icosahedron, the same number as for the dodecahedron .
[ as see at https://www.google.com/#q=43380+polyhedron
]