8 posts tagged with mathematics and geometry.
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Mr. Math Monster, I presume?

Help me to learn math as an adult when I still despise the frustrating beast from my childhood! [more inside]
posted by DisreputableDog on Mar 24, 2012 - 20 answers

I still KNOW the quadratic equation, just not what it means

I have forgotten basically all of math, and I want to learn it again from the ground up. [more inside]
posted by showbiz_liz on Oct 19, 2011 - 28 answers

An awesome vector geometry teaching website

I'm trying to find a website that teaches vector mathematics in lesson form. [more inside]
posted by giggleknickers on May 3, 2010 - 2 answers

Regular tessellations of Euclidean spaces

MathFilter: Is there a relationship between the number of dimensions in a Euclidean space and the number of regular tessellations of that space? [more inside]
posted by jedicus on May 2, 2010 - 10 answers

How many balloons would it take to fill a room?

Packing efficiency of 9" balloons? [more inside]
posted by nilihm on Jul 17, 2007 - 13 answers

3D Trig question

3D Trig question: I have a 2D square in 3D space (a Face). I know the positions of the four corner vertices in form x,y,z. How do I calculate the rotation in degrees (Euler angles) as relative from the center of the face? I want to end up with degrees of rotations around x-axis,y-axis,z-axis. Bonus if you can write it in pseudocode.
posted by pooya on May 9, 2007 - 7 answers

Postscript code for epicycloid?

I want a true vector-based (i.e., not merely a series of thousands of line segments) Postscript or Illustrator file of an epicycloid where a=5, b=2. [more inside]
posted by dmd on Feb 19, 2006 - 25 answers

Lat and Long

Given the latitude and longitude of three points, how can I find the coordinates of the point that is equidistant from them? [mi] [more inside]
posted by obiwanwasabi on Feb 6, 2005 - 21 answers

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