Abstract/abstraction: Style of art that does not represent its subject matter in a realistic way. It emphasizes the elements of art—line, color, shape, texture, and form—to express its subject.

Biomorphic: In art, forms that are inspired by living things; bio=life, morphic=having the form of

Cylinder: The set of all points in space equidistant from a given line. This forms a tube with circles for both bases. Formula for determining the volume = pi(r²)(h). Formula for determining surface area = 2(pi)(r²) + 2(pi)(r)(h).

Diameter: The length of a straight line passing through the center of a circle and connecting two points on the circumference

Maquette: A small model, prepared before a work of art is made in its enlarged form

Mobile: A three-dimensional work of art with pieces that move

Pi: (π) The ratio of the circumference or periphery of a circle to its diameter. Pi is equal to: 3.14159265

Radius: The length of a line segment between the center and circumference of a circle or sphere

Realistic/realism: Art that seeks to produce a true-to-life representation of its subject matters; its shapes and forms are recognizable as people, places, or things

Sculpture: A three-dimensional work of art

Stabile: A term coined for Calder's enormous stable sculptures made of painted sheet metal

Surface Area: A measure of the number of square units needed to cover the faces or surfaces of a figure. The surface area of a cylinder is SA = pi(r2) + 2(pi)(r)(h).

Volume: A measure of the number of cubic units needed to fill the space inside an object. The volume of a cylinder is V = pi(r2)(h).