The intersection of two planes is never a point.
It's usually a line. But if the planes have identical characteristics, then their intersection
is a plane. And if the planes are parallel, then there's no intersection.
Never.
Yes, two lines in intersecting planes are never skew. Skew lines are defined as lines that do not intersect and are not parallel, typically found in different planes. Since the two lines are in intersecting planes, they can either intersect or be parallel, but they cannot be skew.
No. The planes must either coincide (they are the same, and intersect everywhere), be parallel (never intersect), or intersect in exactly one line.
A dihedral angle is the angle between two intersecting planes.
no
Never.
Intersecting planes!
A line, or intersecting planes.
yes
No, two planes do not intersect in exactly one plane unless the planes are exactly overlapping, making one plane. In Euclidean Geometry two planes intersect in exactly one line.
Two distinct planes will intersect in one straight line.
No, 2 planes may only intersect at a line, a plane, or not at all. THREE planes may intersect at a point though...
No. Either they do not intersect at all, or they intersect in a straight line or are the same.
No. The planes must either coincide (they are the same, and intersect everywhere), be parallel (never intersect), or intersect in exactly one line.
A dihedral angle is the angle between two intersecting planes.
Some planes are parallel and don't intersect at all. Those that do intersect (and that are not coincident, i.e. the same plane) intersect in a line.
no