Red Seal Welding Practice Exam

What drawing works off of 30° on both sides of the centreline?

1. Orthographic

2. Isometric

3. Perspective

4. Schematic

The correct answer is: Isometric

An isometric drawing is a type of axonometric projection, meaning it is a three-dimensional (3D) drawing that represents an object in a 2D format. It uses 30° angles on all three axes (x, y, and z) in order to create a 3D representation of an object. In contrast, orthographic drawings use 90° angles and show multiple views of an object, while perspective drawings show depth and use vanishing points to create a realistic 3D illusion. Schematic drawings show simplified and abstract representations of an object, but do not necessarily follow specific angles or measurements.