Glossary, Continued
T (Continued)
T-SQUARE—A ruling guide with a 90° angled crosspiece at one end used in
making horizontal lines.
TURPENTINE —A solvent distilled from the sap of pine or from pine wood
used as a thinner and to clean brushes.
TUTORIAL—A lesson guide.
TWO DIMENSIONAL—Flat, without depth, having only width and height.
TWO-POINT PERSPECTIVE—Also called ANGULAR PERSPECTIVE.
The most common type of perspective drawing where the object is sitting at
an angle to the plane of projection and each object has two vanishing points.
TYPEFACE—The printing surface of an alphabet judged by its design,
printability, wearability, and position on the letter body.
TYPE FAMILY—A group of typefaces similar although not exactly alike in
design.
TYPE SERIES—Different sizes of the same typeface.
TYPESETTERS, PHOTOGRAPHIC—Machines that supply a variety of
type designs and sizes, automatically letterspaced and justified on transparent
film or plastic-coated opaque paper.
TYPOGRAPHY—The art of type selection and arrangement.
U
ULTRAVIOLET LIGHT—Actinic (shorter wavelength) or useable part of
the light spectrum needed to react or harden light-sensitive coatings.
UNDERTONE—A color whose effect is modified by other colors imposed
over them.
UNRETOUCHED—Not altered or improved by any means.
Continued on next page
AI-63
