A point is zero-dimensional, representing a specific location in space, while a line is one-dimensional, having length but no width or depth. To define a line, at least two points are necessary, which can be connected to form that line. Although individual points lack dimensions, they serve as essential building blocks for creating lines. This concept can be visualized as connecting dots on paper to produce a continuous line. Understanding this relationship clarifies how zero-dimensional points can contribute to one-dimensional lines.