Isometric Drawing is one of 9 topics in the Grade 11 Engineering Graphics and Design CAPS syllabus, covered across 3 lessons on Study Vault. Below are real practice questions from this topic with full worked answers.
Sample practice questions
Easy
1. At what angle are the three isometric axes drawn to each other from a common origin point?
120 degrees
90 degrees
60 degrees
45 degrees
Answer: 120 degrees — The three isometric axes are drawn at 120 degrees to each other from a common origin point.
Easy
2. What is an isometric line?
A line on the object that runs parallel to one of the three isometric axes
Any line drawn using a ruler
A line that always represents hidden detail
A curved line only
Answer: A line on the object that runs parallel to one of the three isometric axes — An isometric line runs parallel to one of the three isometric axes, and can be measured directly at its true length along that axis direction.
Medium
3. Name the type of line, such as a sloped edge or diagonal, that cannot be measured directly at true length on an isometric drawing.
Answer: a non-isometric line — A non-isometric line does not run parallel to any of the three isometric axes and cannot be measured directly at true length, since the isometric system foreshortens lines running in other directions.
