Content deleted Content added
Dedhert.Jr (talk | contribs) →Dual polyhedron: unsourced |
Dedhert.Jr (talk | contribs) →Related polyhedra and honeycombs: unsourced |
||
Line 32:
* the dihedral angle of the triangular prism between the square to its bases is <math display="inline"> \frac{\pi}{2} = 90^\circ </math>, and the dihedral angle between square-to-triangle, on the edge where tetrahedron and triangular prism are attached, is <math display="inline"> \arccos \left(\frac{1}{3}\right) + \frac{\pi}{2} \approx 160.5^\circ </math>;
* the dihedral angle of the triangular prism between two adjacent square faces is the internal angle of an equilateral triangle <math display="inline"> \frac{\pi}{3} = 60^\circ </math>.
== References ==
| |||