Both are planar and rugged.
The quartz-feldspar interfaces are planar, and the quartz areas tend to be triangular in cross section.
Although not as flat as his pierced metal works, laminated wood pieces like "Wave II" and "Crasher" are planar in structure, relying on shallow space for their dramatic impact.
They are planar in form, truncate a wide variety of bedrock types, and can most readily be explained by scarp retreat under non-vegetated conditions.
We use the term 'polyhedral surface' to emphasize that the faces of a mesh are planar.
Most fabrication techniques, however, are planar and therefore incapable of providing depth-dependent variations in width.
The two antennas are planar inverted-F antennas (PIFA) that are fed with microstrip feed lines.
Basement membranes (BMs) are planar protein networks that support epithelial function.
One of such test-beds are planar air-bearing microgravity simulators.
The six "toroidal field" coils are planar as in a tokamak, but they are tilted.
Figure 1 shows the 3D primitives that val3dity supports; LinearRings are linear GM_Curves, and Polygons are planar GM_Surfaces.
