If this /_/ (square skewed) is a trapezoid,
this ^ (triangle elongated) is a prism
this /_\ (tapered square) is a rhombus and
this [_] (square) is a cube when in 3 dimensions, what is a cube where the sides aren't equidistant? essentially a 3D rectangle? Or are both 3D squares and 3D rectangles cubes?
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Geometry question... |
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Jacquelin Seisenbacher
Registered User
Join date: 22 Dec 2006
Posts: 156
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08-09-2008 12:13
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 Kleineschwein by Seisenbacher ~ Clothing, Skins and more... In world http://slurl.com/secondlife/Caledon%20Eyre/48/112/25 blog http://kleineschweinpages.blogspot.com/ |
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Drongle McMahon
Older than he looks
Join date: 22 Jun 2007
Posts: 494
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08-09-2008 12:32
A cuboid. http://en.wikipedia.org/wiki/Cuboid
By the way /__\ is a trapezium or trapezoid and /__/ is a parallelogram. A parallelogram with all sides equal length is a rhombus. And technically, a prism is any polygon extruded, not just a triangle. That is a triangluar prism. |
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Jacquelin Seisenbacher
Registered User
Join date: 22 Dec 2006
Posts: 156
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08-09-2008 12:34
ohhh okay, lol, thanks. It has been waaaaay too long since my HS geometry class.
 _____________________
"Be yourself, everyone else is already taken" Oscar Wilde
Kleineschwein by Seisenbacher ~ Clothing, Skins and more... In world http://slurl.com/secondlife/Caledon%20Eyre/48/112/25 blog http://kleineschweinpages.blogspot.com/ |
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Ricky Zamboni
Private citizen
Join date: 4 Jun 2004
Posts: 1,080
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08-09-2008 15:46
A cuboid. http://en.wikipedia.org/wiki/Cuboid By the way /__\ is a trapezium or trapezoid and /__/ is a parallelogram. A parallelogram with all sides equal length is a rhombus. And technically, a prism is any polygon extruded, not just a triangle. That is a triangluar prism. A cuboid is a special case of the more general parallelepiped. http://en.wikipedia.org/wiki/Parallelepiped |
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Drongle McMahon
Older than he looks
Join date: 22 Jun 2007
Posts: 494
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08-09-2008 16:06
Yes indeed, and the special case when all the faces of the parallelepiped are a certain rhombus, is the rhomboctahedron, which is my favourite because you can stack it to fill space, like the cube.
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Naz Fride
21st Century Faux
Join date: 8 May 2007
Posts: 341
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Not a rhombus
08-10-2008 10:41
>this /_\ (tapered square) is a rhombus and
That's not a rhombus, it's a trapezoid. A rhombus has to have two sets of parallel sides, in addition to having the lengths of all four sides equal. A trapezoid has four sides, with exactly 2 of them parallel, with no length restrictions. If this /_/ (square skewed) is a trapezoid, this ^ (triangle elongated) is a prism this /_\ (tapered square) is a rhombus and this [_] (square) is a cube when in 3 dimensions, what is a cube where the sides aren't equidistant? essentially a 3D rectangle? Or are both 3D squares and 3D rectangles cubes? |
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2k Suisei
Registered User
Join date: 9 Nov 2006
Posts: 2,150
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08-10-2008 11:17
this (o) is a boobie
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2k Suisei
Registered User
Join date: 9 Nov 2006
Posts: 2,150
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08-10-2008 11:18
and here's a bunny rabbit:
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