Classes 17.12.2008

POLYHEDRONS - PRISMS

Task 1

Projections of right prism are given. The base of prism is a quadrangle ABCD. The

quadrangle belongs to horizontal projection plane. Construct projections

– horizontal,

vertical and right side, of truncated by three planes





and



, prism. Planes are

perpendicular to vertical projection plane. Construct development of prism.

Task 2

Projections of four parallel to horizontal projection plane lines are given

– a, b, c, d.

Construct projections and development of slant prism which is defined by lines and

two perpendicular to horizontal projection plane, planes

–



and



.

Task 3

Projections of base of slant prism, quadrangle ABCD are given (base belongs to

horizontal projection plane). Construct projections and development of prism

AA

1

BB

1

CC

1

DD

1

if:



side

’s edges of prism are parallel to vertical projection plane,



the length of side

’s prism’s edge is 8 cm,



prism

’s edges are slanting to horizontal projection plane at 30

o

angle.