trihedral angle or trihedral quoin, a solid angle formed by three surfaces meeting at a point.
| 单词 | θ115877 | 
| 释义 | the world > relative properties > number > geometry > shape or figure > 			[adjective]		 > three-dimensional > having number of faces > trihedral (1)		 trihedral angle1789 trihedral angle or trihedral quoin, a solid angle formed by three surfaces meeting at a point. | 
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