Oblique Projection Flashcards
(12 cards)
What is the definition of oblique projection?
Oblique projection is a method of drawing objects in 3D on a 2D surface where the front face is drawn in true shape and size, and the depth is projected at an angle (usually 45°) to give a sense of 3D.
What are the two main types of oblique projection?
- Cavalier projection
- Cabinet projection
What characterizes cavalier projection?
In cavalier projection, depth is drawn at full scale, lines go back at 45°, and it looks more stretched.
What is a feature of cabinet projection?
In cabinet projection, depth is drawn at half scale and also uses a 45° angle, making it look more realistic.
What distinguishes general oblique projection?
In general oblique projection, depth scale and angle can vary, giving flexibility in appearance.
List the features of oblique projection.
- Front face = true shape
- Depth lines are angled (usually 30°, 45°, or 60°)
- All vertical and horizontal lines on the front face remain parallel
- Easy to draw, often used for quick sketches
What are the steps to draw an oblique projection? (List them)
- Draw the front view (true shape and size)
- Project lines backward from corners at an angle (usually 45°)
- Mark depth distances on these lines
- Complete the shape by joining the back corners
What are the uses of oblique projection?
- Engineering sketches
- Product design
- Mechanical drawing
True or False: In oblique projection, all vertical and horizontal lines on the front face remain parallel.
True
Fill in the blank: In cavalier projection, depth is drawn at _______ scale.
full
Fill in the blank: In cabinet projection, depth is drawn at _______ scale.
half
What angles are commonly used for depth lines in oblique projection?
- 30°
- 45°
- 60°
