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Chat with our AI personalities
If I understand the grammar correctly, the answer is one line.
A single line is not sufficient to define a plane. You can find a plane such that the line is in it. But if you then rotate the plane using that line as the axis of rotation, you can get an infinite number of planes such that the line belongs to each and every one of the planes.
The intersection of two planes is a line. (or a massive explosion...lol)
Yes. If points are on the same side of a line, they are in a half-plane.
Yes. If two planes are not coincident (the same plane) and are not parallel, then they intersect in one straight line.