Editing Dihedral angle (section)

{{split|discuss=Talk:Dihedral angle#Split proposal|date=December 2024}}
{{short description|Angle between two planes in space}}
{{About|the geometry concept|the aeronautics concept|Dihedral (aeronautics)|other uses|Dihedral (disambiguation){{!}}Dihedral}}
[[File:Dihedral angle.svg|thumbnail|Angle between two half-planes (α, β, pale blue) in a third plane (red) perpendicular to line of intersection.]]
{{Angles}}

A '''dihedral angle''' is the [[angle]] between two [[Plane–plane intersection|intersecting planes]] or [[half-plane]]s. It is a plane angle formed on a third plane, perpendicular to the [[line (geometry)|line]] of intersection between the two planes or the common [[edge (geometry)|edge]] between the two half-planes. In [[higher dimension]]s, a dihedral angle represents the angle between two [[hyperplane]]s. In [[chemistry]], it is the clockwise angle between half-planes through two sets of three [[atoms]], having two atoms in common.