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curves_surfaces · curves and surfaces
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Group Information

  • Members: 80
  • Category: Geometry
  • Founded: Nov 4, 2004
  • Language: English
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Description

This forum discusses anything related to curves and surfaces.

Please see:
http://xahlee.org/SpecialPlaneCurves_dir/specialPlaneCurves.html
http://xahlee.org/surface/gallery.html

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new updates. Geogebra files
lots update in the past 2 months. About 20 GeoGebra files are added. See: http://xahlee.org/SpecialPlaneCurves_dir/Intro_dir/whatsNew.html Xah xah@...
Posted - Fri Feb 15, 2008 10:14 am
 xah lee
p0lyglut
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Equiangular spiral and complex-point version
Here, I've added the draggable complex point q through which there's a unique equiangular spiral going through (1, 0) and with "collapsed radius" of 1. By
Posted - Thu Jan 11, 2007 6:10 pm
 Chris Young
c1572young
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Triangle regions; thicker border on main triangle
Here, I've just used the unit normal vector to thicken the border of the main triangle to distinguish it from the sub-triangles (thinner, colored borders).
Posted - Thu Oct 19, 2006 7:18 pm
 Chris Young
c1572young
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Triangle regions with striping
I'm not exactly sure why this is working, but I've finally got overlapping stripes to show how the positive area (in this case, the yellow triangle outside
Posted - Wed Oct 18, 2006 1:25 am
 Chris Young
c1572young
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[GraphingCalcUsers] Triangle regions: Explanation of how "code" wor
Thought you might be interested in this as an example of illustrating algebraic geometry with Graphing Calculator. Free GC viewers are available at
Posted - Tue Oct 17, 2006 5:18 pm
 Chris Young
c1572young
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