Den 11. jan. 2008 kl. 20.50 skreiv Roger Mills:

> Are there formulae for drawing those triangular shapes with curved  
> sides?

If you'd like to do this by hand, try y = (6.28 x cos(x/r)) / n,

where y is the width of the wedge at x, r is the radius of the globe,  
and n is the number of wedges. Make sure cos calculates in radians.

No wedge cut from flat paper will fit perfectly over a globe, but the  
fit gets better the more wedges you use. Wetting the paper will  
probably make it a little more stretchable, depending on the type of  
paper, and easier to fit.