Midpoint augmentation, a term introduced here, is a variant of conventional augmentation in which each facial polygon is replaced by a triangular polygon joining vertices with the neighboring edge midpoints, and then constructing a pyramid with the base determined by the face's midpoints. Midpoint augmentation allows compounds of Archimedean solids and Archimedean duals to be easily constructed.
Midpoint Augmentation
See also
Archimedean Dual, Archimedean Solid, AugmentationExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Midpoint Augmentation." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/MidpointAugmentation.html