Question

Which method of development is employed in case of prisms?

(a) Parallel-line development

(b) Approximation method

(c) Triangulation development

(d) Radial-line development

The question was posed to me in semester exam.

The above asked question is from Development of Surfaces topic in chapter Development & Intersection of Surfaces of Engineering Drawing

Answer 1

Right option is (a) Parallel-line development

To elaborate: Parallel-line method is employed in case of prisms and cylinders in which stretch out-line principle is used. Radial-line development is used for pyramids and cones in which the true length of the slant edge or the generator is used as a radius.