Question

The problem figure shows the elevation of an object. Identify the correct top view from amongst the answer figures.

• A.

  

• B.

  

• C.

  

• D.

  

Hint:

A trapezoid elevation with one vertical line at the middle means an edge of the solid points towards the viewer; this fits a six-sided frustum seen corner-on.

Answer 1

The Correct Option is D

The elevation is a trapezoid with one vertical line at its centre. So from the front two sloping side faces are seen, meeting along a central edge: a corner of the solid points towards the viewer. The solid is again a frustum (wider at the base).
A rectangular frustum seen from the front shows one plain trapezoid face with no central line, so Option (3) is not the answer. Options (1) and (2) are not frustums at all: Option (1) is a set of plain vertical strips and Option (2) has a cross drawn across the top. A frustum with six sides, standing with one corner towards the viewer, shows exactly one central edge with a face on each side. Its top view is a smaller hexagon inside a larger hexagon with the corners joined by lines, and one corner at the bottom (towards the viewer).
Option (4) shows this hexagonal frustum, so it is the correct top view.
Answer: (4) Option (4) figure