Final answer:
A plane and a line intersecting at a 90° angle form a right angle or a 90° angle. This relationship has implications for spatial orientation.
Step-by-step explanation:
A plane and a line intersecting at a 90° angle implies that the line is perpendicular to the plane. This geometric relationship is called a right angle or a 90° angle.
When considering spatial orientation, the line can be thought of as extending vertically or perpendicular to the plane. It can also be visualized as the line standing upright on the plane, forming a 90° angle.
Understanding the concept of perpendicular lines and their relationship with planes is important in geometry and can be used in various applications within mathematics and other fields.