What shape of urban pattern is characterized as a vast urban area with little to no articulation?

The urban pattern characterized as a vast area with little to no articulation is referred to as a "Sheet". This term describes an extensive, uniform urban fabric that lacks distinct subdivisions or variations within the built environment. Such a pattern is often seen in urban sprawl, where development spreads across the landscape without clear boundaries or hierarchical organization, leading to a homogenous appearance.

The concept of a sheet urban pattern contrasts sharply with more articulated designs, which would display defined districts, cores, or zones. An articulated sheet would imply some level of subdivision or variation, while constellations refer to clusters of urban forms that might have more distinct characteristics or groupings. Satellites usually denote secondary developments or areas that orbit around a central urban core but maintain a clearer definition between the central urban area and its surroundings.

Thus, the 'Sheet' accurately encapsulates the notion of a sprawling, undifferentiated urban area.