Glossary - AutoCAD 2011 and AutoCAD LT 2011: No Experience Required - page 945

g l o s s A r y

nuMBERS AnD SYMBoLS A

3D face absolute coordinates

A triangular or four-sided flat surface that is
the basic unit of a three-dimensional surface.

Values for locating a point in space that
describe its displacement from the origin
(0,0,0) point of the drawing.

3D mesh

alias

A set of adjacent flat surfaces that together
form a geometrical depiction of a three-
dimensional surface. See also 3D surface .

A shortcut for starting commands. It's a set
of one or two letters that you can enter at the
command line instead of the full command.

3D model

aligned dimension

An AutoCAD object that occupies three-
dimensional space and represents building
components or geometrical objects in the
real world. See also object .

A linear dimension measuring the distance
between two points. The dimension line for
an aligned dimension is parallel to a line
between the two points.

3ds Max

annotation scale

A complementary product to AutoCAD, also
produced by Autodesk. With 3ds Max, you
can create and animate three-dimensional
scenes.

A function of both model space and floating
viewports that represents the true ratio of
a scale and is used to correctly size annota-
tive objects such as text and blocks. When
LTSCALE and MSLTSCALE are set to 1, the
annotation scale is also used to accurately
display linetypes.

3D surface

A network of adjacent three-dimensional
faces that together form a continuous plane.
Surfaces may be created as a part of a 3D
mesh, or as a procedural or NURBS surface.
See also 3D mesh , Procedural surface , and
NURBS surface .

angular dimension

A dimension that measures the angle
between two lines or the angle inscribed by
an arc.