Two-dimensional (2D) shapes are completely flat ... 2D shapes have sides and corners. Another name for a corner is a vertex. A vertex is a point where two or more lines meet.

Here are the basic differences. Manifolds can be shapes of any dimension, from zero-dimensional points to one-dimensional lines to two-dimensional surfaces (like the surface of a ball) to ...

Above: Mesh R-CNN converts 2D objects to 3D shapes. Facebook researchers say they augmented the open source Mask R-CNN’s two-dimensional object segmentation system with a mesh prediction branch ...

But about five years ago, Caltech computational bioengineer Paul Rothemund laid out a new design strategy called DNA origami: the construction of two-dimensional shapes from a DNA strand folded ...