# Euler angles/Related Articles

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*See also changes related to Euler angles, or pages that link to Euler angles or to this page or whose text contains "Euler angles".*

- Euler's theorem (rotation) [r]: In three-dimensional space, any rotation of a rigid body is around an axis, the rotation axis.
^{[e]} - Rotation matrix [r]: a 3×3 proper (unit determinant) orthogonal (orthonormal rows and columns) matrix
^{[e]} - Spherical polar coordinates [r]: Angular coordinates on a sphere: longitude angle φ, colatitude angle θ
^{[e]} - Rigid rotor [r]: A 3-dimensional rigid object rotating around its center of mass.
^{[e]} - Wigner D-matrix [r]: matrix in an irreducible representation of the groups SU(2) and SO(3); quantum mechanical symmetric top eigenfunctions.
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