Line Conventions
Isometric
Oblique
Perspective
Multiview
100

This type of line is very lightly drawn to guide drawing other lines and shapes

Construction Line

100

This type of drawing shows three faces of an object in one view and provides a realistic view of the object

Pictorial Drawing

100

This type of pictorial drawing starts with a straight-on view of one of the object's faces, often the front face

Oblique Pictorial

100

This type of drawing offers the most realistic three-dimensional view of all the pictorial methods, portraying the object in a manner similar to how the human eye perceives the visual world.

Perspective Drawing

100

This type of drawing shows two or more two-dimensional views of a three-dimensional object and serves as the main form of communication between designers and manufacturers

Multiview Drawing

200

This thick and dark line defines the object in a technical drawing

Object Line

200

In an isometric drawing, these three edges represent height, width, and depth and converge at one point appearing as 120-degree angles

Isometric Axes

200

These angled, parallel lines are drawn to one side to represent the object's depth in an oblique pictorial.

Depth Lines

200

This type of perspective drawing uses one vanishing point on the horizon line and is relatively simple to make but somewhat awkward in appearance

One-Point Perspective

200

This technique is used to create multiview drawings by projecting the features of an object onto an imaginary plane of projection

Orthographic Projection

300

This line shows interior detail not visible from the outside of the part.

Hidden Line

300

This sketching technique is used to maintain proportionality by envisioning an object contained within an imaginary box

Box Method

300

This type of oblique pictorial represents the depth of the object at full scale, making the object appear deeper than it actually is

Cavalier Oblique

300

This type of perspective drawing uses two vanishing points on the horizon line and is the most common perspective drawing.

Two-Point Perspective

300

This imaginary surface exists between the viewer and the object, onto which a two-dimensional view of a three-dimensional object is projected and created

Projection Plane

400

This line defines the center of arcs, circles, or symmetrical parts and is half as thick as an object line

Center Line

400

This step in isometric sketching involves deciding the light source position and adding shading to two of the three faces to enhance the appearance

Tonal Shading

400

This type of oblique pictorial represents the depth of the object at half scale, providing a more realistic view because the depth does not appear distorted.

Cabinet Oblique

400

This type of perspective drawing gives the viewer either a worm’s-eye or bird’s-eye view of an object, using three vanishing points

Three-Point Perspective

400

This process involves using projection lines to project each corner of an object outward until they reach the projection plane, then connecting the projected corners with object lines

Orthographic Projection Process

500

This rule states that object lines take precedence over hidden and center lines, and cutting plane lines take precedence over all others

Line Precedence

500

An isometric pictorial begins with a ________ (the first thing the viewer sees)

Point

500

What degree are the depth lines drawn at to create oblique pictorials

45 degrees

500

The line that represents where all the lines of the perspective drawing merge and vanish

Horizon line

500

What are the three most typical views represented in a Multiview drawing?

Front, Top, and Right

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