A plane making equal angles with the three edges of a trihedron.
Isoclinal Plane
See also
Isoclinal Line, TetrahedronExplore with Wolfram|Alpha
References
Altshiller-Court, N. "Isoclinal Lines and Planes." §2.3 in Modern Pure Solid Geometry. New York: Chelsea, pp. 32-37, 1979.Referenced on Wolfram|Alpha
Isoclinal PlaneCite this as:
Weisstein, Eric W. "Isoclinal Plane." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/IsoclinalPlane.html