Definition:Dihedral (Geometry)

Definition

A dihedral is a configuration in solid geometry formed by two half-planes meeting at a common straight line.

Dihedral Angle

A dihedral angle is the angle contained by two straight lines drawn perpendicular to the common section at the same point, one in each of the two half-planes forming a dihedral.

Also see

• Results about dihedrals in the context of geometry can be found here.

Sources

• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): dihedral
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): dihedral