Problem 60984. Mesh the icosahedron

Problem statement
An icosahedron is a regular polyhedron with 12 vertices and 20 triangular faces. It is also one of the five well known platonic solids.
A triangulation, or triangulated mesh, is simply a N x 3 matrix of positive integers where each row contains the vertex indices of a triangle, and where N is the number of triangles.
Your task here is to mesh this icosahedron. To do so, you will list the triangles/rows in a matrix of triangles, T.
The row order of the triangles in the list doesn't matter.
Tip
  • Vertex indices are written on the figure below; use it to help you visualize;
  • You can start with the triangles of the top cap and bottom cap, they are the easiest ones to identify here.
Forbidden functions / expressions
  • regexp
  • assignin
  • str2num
  • echo
See also
Solve

Solution Stats

61.54% Correct | 38.46% Incorrect
Last Solution submitted on Aug 19, 2025

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