Oblique projection is a method of drawing 3D objects on a 2D surface, making them appear three-dimensional. It's a key skill for communicating technical designs.
▸ Oblique Projection — A type of parallel projection where the object's front face is parallel to the projection plane, and the receding lines are drawn at an angle (often 30, 45, or 60 degrees) to represent depth.
Example: Drawing a box where the front face is a true square, and the sides extend diagonally backwards.
To draw an oblique diagram, you start with the front face of the object, then draw parallel lines from the corners at a chosen angle and length to represent depth. This helps visualize the object's form.
✎ Activity: Using drawing paper, a pencil, and a ruler, attempt to draw a simple cube using oblique projection. Start by drawing a square for the front face.
• Complete the activity described and discuss your answer with a partner or teacher.
Expected outcome: Learners can explain what they practised and connect it to the lesson objective.
★ Real-world:
Architects and product designers often use various forms of technical drawing, including oblique projection, to present their concepts to clients and construction teams, ensuring everyone understands the spatial relationships of the design.
Audio narration — reads aloud, works offline
In your own words, summarise the main idea of this lesson.