Dihedral Angle

Pronunciation: /daɪˈhi drəl ˈæŋ gəl/ Explain

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Why do you think that the dihedral angle between two planes is never greater than 180 degrees?
Manipulative 1 - Dihedral Angle Created with GeoGebra.

A dihedral angle is the angle formed by two intersecting planes. The Intersecting Planes Postulate tells us that intersecting planes form a line. Take a line in each plane that is perpendicular to the line of intersection. The two lines must intersect. The dihedral angle of the planes is the angle between the two lines.

Cite this article as:

McAdams, David E. Dihedral Angle. 7/4/2018. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/d/dihedralangle.html.

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Revision History

7/4/2018: Removed broken links, updated license, implemented new markup, implemented new Geogebra protocol. (McAdams, David E.)
1/23/2010: Added "References". (McAdams, David E.)
7/10/2008: Changed manipulative from Sketchpad to GeoGebra. Added More Information (McAdams, David E.)
5/7/2008: Initial version. (McAdams, David E.)

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