### Why do this problem?

Representing 3D objects in two dimensions on paper is a vital skill in the Design Technology curriculum, as well as an aspect of Shape and Space in the Maths curriculum. This problem is part of a set of problems which will help students to understand why there are different ways to represent a 3D object in two dimensions, and what maths lies behind each method.

The article 3D Drawing was written to support these problems.

### Key questions

What are the advantages of this method of 3D drawing? What are the disadvantages?

What features of the object are retained in the drawing, which are not?

### Possible extension

Students who find isometric drawing straight-forward should be encouraged to tackle the other problems in this set (linked from 3D Drawing) and to compare the various methods.

### Possible support

Students who find it difficult to draw the multi-link structure shown in the problem could be given simpler multi-link structures to draw, helping them to build up to drawing more complex ones.