Transversal plane

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Plane "t" is a transversal plane because it intersects parallel planes "p" and "q".

In

planes.[1] A transversal plane may also form dihedral angles
.

Theorems

Transversal plane theorem for lines: Lines that intersect a transversal plane are parallel if and only if their alternate interior angles formed by the points of intersection are congruent.

Transversal plane theorem for planes: Planes intersected by a transversal plane are parallel if and only if their alternate interior

dihedral angles
are congruent.

Transversal line containment theorem: If a

transversal line
is contained in any plane other than the plane containing all the lines, then the plane is a transversal plane.

References