development of surfaces Flashcards
uses parallel lines to
construct the expanded pattern of each threedimensional shape. The method divides the surface
into a series of parallel lines to determine the shape
of a pattern. Example: Prism, Cylinder.
PARALLEL LINE
DEVELOPMENT
uses lines radiating from a
central point to construct the expanded pattern of
each three-dimensional shape. Example: Cone,
Pyramid
RADIAL LINE
DEVELOPMENT
developments are made from
polyhedrons, single curved surfaces, and
wrapped surfaces. Example: Tetrahedron
and other polyhedrons
TRIANGULATION
DEVELOPMENTS
, the shape
obtained is only approximate. After joining,
the part is stretched or distorted to obtain
the final shape. Example: Sphere.
APPROXIMATE
DEVELOPMENT
is one in which no stretching or distortion
of the surfaces occurs, and every surface of the development
is the same size and shape as the corresponding surface on
the 3-D object
* Polyhedrons are composed entirely of plane surfaces that can
be flattened true size onto a plane in a connected sequence.
TRUE
DEVELOPMENT
are composed
of consecutive pairs of straight-line
elements in the same plane.
- Single curved surfaces
what is the example of radial line development?
cone,pyramid
what is the example of approximate development?
sphere
what is the example of parallel line development?
prism,cylinder
what is the example of triangulation development?
tetrahedron and other polyhedrons