What is the shape formed by two planes that intersect at an angle?

When two planes intersect at an angle, they create an angle in space where the planes meet. This angle is significant in geometry because it helps define the relationship between the two planes. The angle represents the measure of rotation needed to bring one plane into alignment with the other. This intersection does not create a curved shape, a line, or simply a face, but rather specifically an angle formed by the diverging directions of the two intersecting planes. Understanding this concept is important for visualizing how three-dimensional shapes and structures exist and relate to one another in space.