Return to Question

removed the deprecated (geometry) tag - see the tag info: https://mathoverflow.net/tags/geometry/info; if there are some other geometry-related tags which are suitable, please use some of them instead

Link

edited Apr 7, 2019 at 6:14

Martin Sleziak

4.7k
4
35
40

Source Link

asked Feb 28, 2012 at 22:22

drum

Triangles with Congruent Corresponding Sides that Cannot fold into a Tetrahedron

I've been trying to find, without much success, 4 triangles whose corresponding sides are congruent that cannot be folded into a tetrahedron.

Anyone has any clue how to approach this problem?

geometry triangles euclidean-geometry