Dihedral or polyhedral may refer to: *

Dihedral angle A dihedral angle is the angle between two intersecting planes or half-planes. In chemistry, it is the clockwise angle between half-planes through two sets of three atoms, having two atoms in common. In solid geometry, it is defined as the un ...

, the angle between two mathematical planes *

Dihedral (aeronautics) In aeronautics, dihedral is the angle between the left and right wings (or tail surfaces) of an aircraft. "Dihedral" is also used to describe the effect of sideslip on the rolling of the aircraft. Dihedral angle is the upward angle from ho ...

, the upward angle of a fixed-wing aircraft's wings where they meet at the fuselage, dihedral ''effect'' of an aircraft, longitudinal dihedral angle of a fixed-wing aircraft *

Dihedral group In mathematics, a dihedral group is the group of symmetries of a regular polygon, which includes rotations and reflections. Dihedral groups are among the simplest examples of finite groups, and they play an important role in group theory, ...

, the group of symmetries of the ''n''-sided polygon in abstract algebra ** Also

Dihedral symmetry in three dimensions In geometry, dihedral symmetry in three dimensions is one of three infinite sequences of point groups in three dimensions which have a symmetry group that as an abstract group is a dihedral group Dih''n'' (for ''n'' ≥ 2). Types Ther ...

* Dihedral kite, also known as a

bowed kite Bowed kite A kite is a tethered heavier-than-air or lighter-than-air craft with wing surfaces that react against the air to create lift and drag forces. A kite consists of wings, tethers and anchors. Kites often have a bridle and tail to g ...

* Dihedral doors, also known as

butterfly doors Butterfly doors are a type of car door sometimes seen on high-performance cars. They are slightly different from scissor doors. While scissor doors move straight up via hinge points at the bottom of a car's A-pillar, butterfly doors move up a ...

Dihedral prime A dihedral prime or dihedral calculator prime is a prime number that still reads like itself or another prime number when read in a seven-segment display, regardless of orientation (normally or upside down), and surface (actual display or reflectio ...

, also known as a dihedral calculator prime * In rock climbing, an inside corner of rock

See also