Sets of parallel, equidistant lines at right angles to each other form what kind of layout?

The layout formed by sets of parallel, equidistant lines at right angles to each other is known as a grid. This structure is characterized by its systematic arrangement, where the vertical and horizontal lines intersect to create a regular pattern of squares or rectangles. Grids are commonly used in various fields, including architectural design, urban planning, and graphic design, due to their efficiency in organizing space and facilitating navigation. The grid system allows for precise measurement and alignment of elements, making it an essential tool in creating cohesive and functional designs.

In contrast, other options are defined by different geometric properties. A circle is defined by a single curved line equidistant from a center point, while a rectangle consists of opposite parallel sides where adjacent angles are 90 degrees, and a triangle is a polygon with three edges and three vertices. None of these alternatives involve the systematic intersection of parallel lines at right angles, which is the distinctive feature of a grid layout.