(a.) Having three sides or faces; thus, a trihedral angle is a solid angle bounded by three plane angles.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). trihedral. Retrieved September 20, 2026, from http://smartdefine.org/trihedral/definitions/2074686 |
| Chicago | Webster's. 2011. "trihedral" http://smartdefine.org/trihedral/definitions/2074686 (accessed September 20, 2026). |
| Harvard | Webster's 2011, trihedral, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/trihedral/definitions/2074686>. |
| MLA | Webster's. "trihedral" 28 May 2011. Web. 20 September 2026. <http://smartdefine.org/trihedral/definitions/2074686> |