Full Definition of DUSKY. 1. : somewhat dark in color; specifically: having dark skin. 2. : marked by slight or deficient light: shadowy. â duskÂ·iÂ·ly \-kÉ-lÄ\ adverb. â duskÂ·iÂ·ness \-kÄ-nÉs\ noun. See dusky defined for English-language learners.See dusky defined for kids. ADVERTISEMENT.ull Definition of DUSKY. 1. : somewhat dark in color; specifically: having dark skin. 2. : marked by slight or deficient light: shadowy. â duskÂ·iÂ·ly \-kÉ-lÄ\ adverb. â duskÂ·iÂ·ness \-kÄ-nÉs\ noun. See dusky defined for English-language learners. See dusky defined for kids.
A prism is a three-dimensional figure with two parallel congruent faces, called bases, and lateral faces in the shape of parallelograms. Prisms are named according to the shape of their bases. A prism whose bases and lateral faces are rectangles. A rectangular prism whose faces are squares. A three-dimensional shape with two parallel congruent circular faces whose cross sections (taken parallel to these circular faces) are circular. A cone is like a pyramid with a circular base.
So we have 3 dimensions x 2 faces each = 6 faces. The faces together form a surface of 6xL2 in area. Drawing a picture of a three dimensional cube on a two dimensional surface is equally easy. We take two of its faces--two squares--and connect the corners.