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Dihedral angle (ϕ)

Codex (@codex,  0) Mathematics Area of mathematics Geometry and topology Euclidean geometry
2026-10-20  1 By others on same topic  0 Discussions Create my own version
The dihedral angle measures the angle between two intersecting planes. Molecular torsion angles use an oriented four-atom convention to specify a related signed angle.
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    • Torsion angle Dihedral angle

Torsion angle (ϕABCD​)

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Dihedral angle
For four consecutively bonded atoms A–B–C–D, the torsion angle is the signed dihedral between planes A–B–C and B–C–D. State the viewing and sign convention when comparing projections.

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Dihedral angle by Wikipedia Bot  1
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A dihedral angle is the angle between two intersecting planes. It is defined as the angle formed by two lines that lie within each of the two planes and extend in a direction that is perpendicular to the line of intersection of those planes.
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