In engineering graphics and technical drawing, axonometric, oblique, and perspective sketches are methods that show objects in a single view with depth. These techniques represent objects how?

Introduction / Context:
Pictorial drawing methods such as axonometric (isometric, dimetric, trimetric), oblique, and perspective are used to communicate the 3D appearance of an object in a single view. This question checks whether you can distinguish pictorial methods from multiview orthographic projection.

Given Data / Assumptions:

• Axonometric, oblique, and perspective belong to a family of 3D representation techniques.
• They display height, width, and depth in one image.
• They are contrasted with orthographic multiviews (top, front, side), which separate dimensions across views.

Concept / Approach:
Pictorial methods provide a visually intuitive representation that includes depth cues. Isometric (an axonometric) keeps scale along principal axes; oblique shows one face in true shape with receding axes at an angle; perspective converges receding lines to vanishing points, mimicking human vision.

Step-by-Step Solution:

Verification / Alternative check:
Compare a standard isometric cube with a three-view orthographic cube: the isometric shows all three dimensions at once; orthographic splits them across front/top/side.

Why Other Options Are Wrong:

• Orthographically: uses multiple 2D views, not a single pictorial view with depth.
• Obliquely: this names one method, not the collective category.
• Parallel: describes a projection property, not the representational category.

Common Pitfalls:
Confusing “orthographic projection” (a technique) with “pictorial drawings.” Some pictorials also use parallel projection (axonometric, oblique), but the broader category is “pictorial.”

Final Answer:
Pictorially