Question

Front view of triangle is given and isometric view is to be drawn which of the following is correct procedure in drawing isometric view.

(a) turning the triangle such that base is making 30 degrees with horizontal

(b) by increasing or decreasing angles at required proportions

(c) drawing parallel to isometric axes

(d) drawing rectangle with base and height of triangle and the drawing rectangle parallel to isometric axes and pointing triangle in it

The question was posed to me in an internship interview.

I'd like to ask this question from Isometric Drawing of Planes or Plane Figures in section Isometric Projection of Engineering Drawing

Answer 1

Correct option is (d) drawing rectangle with base and height of triangle and the drawing rectangle parallel to isometric axes and pointing triangle in it

Explanation: The surface of the triangle is vertical and the base is horizontal so base will be drawn parallel to a slopping axis. The two sides of the triangle are inclined. Hence they will not be drawn parallel to any isometric axis.