How to generate a solid of revolution from a 2-dimensional shape?

USedona shared this question 7 months ago
Needs Answer

Hello,

I'm discovering GeoGebra 3D, I'm looking to generate solids of revolution.


I drew in 2 dimensions a Reuleaux triangle (wikipedia).

How to create a solid of revolution with this shape ?

I've tried things but I don't get the results I expected.

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I need this shape :


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Thanks,

USedona

Comments (2)

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1

A reuleaux tetrahedron is not a simple rotation shape. The 4 spherical surfaces are limiting them selves. In order to create such a shape in GGb you have to calculate the surfaces analytical... this takes a bit of effort and the resulting formulas might be a bit to much for GGb. You can find a example in the attached file./w9pWQjb+BnOIQAAAABJRU5ErkJggg==

I remember that there is a much simpler and faster solution in this forum which works with overlapping sphere parts. Sadly i can not find it anymore.


Found them:

With those technices it is simpler the achieve the spherical triangles:

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1

Very cool! Thanks for sharing!

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