Question

choose three examples of orthographic drawings

select one or more:
a. 2 point perspective view
b. oblique view
c. elevation
d. plan view
e. sectional view

Explanation:

Define orthographic projection

Using the Orthographic Projection and Technical Drawing Views knowledge points
Orthographic projection is a method of representing three-dimensional objects in two dimensions by projecting views perpendicular to the drawing plane. Unlike pictorial drawings, orthographic views do not show depth through perspective or angled receding lines; instead, they show the object from specific, flat directions.

Analyze the given options

Using the Pictorial Drawings and Perspective Projection knowledge points

• a. 2 point perspective view: This is a pictorial drawing that uses vanishing points to mimic human vision, showing depth. It is not orthographic.
• b. oblique view: This is a type of pictorial drawing where the front face is parallel to the projection plane and the sides are drawn at an angle (usually \(30^\circ\) or \(45^\circ\)) to show depth. It is not orthographic.
• c. Elevation: An elevation is a flat, two-dimensional view of an object seen from one side (e.g., front, rear, left, right). This is a standard orthographic view.
• d. Plan view: A plan view is an orthographic projection of a three-dimensional object onto a horizontal plane, showing it from directly above.
• e. Sectional view: A sectional view shows the interior detail of an object by projecting a cut-away view orthographically onto a plane.

Select the three correct examples

Using the Technical Drawing Views knowledge point
The three options that represent orthographic drawings are:

• c. Elevation
• d. Plan view
• e. Sectional view

Answer:

• a. 2 point perspective view
• b. oblique view
• c. Elevation (Correct answer)
• d. Plan view (Correct answer)
• e. Sectional view (Correct answer)