Question

A plane is a ___ (one-dimensional, two-dimensional, three-dimensional) figures. The intersection of two olanes that do not coincide (if it exists) is a ___ (point, line, angle).

Answer 1

A plane is 3 dimensional or 3D because it is not flat. The intersection of two planes would make an angle.

Answer 2

A plane is a two-dimensional figure.
The intersection of two planes that do not coincide is a line.