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Technical Drawings Review
Terms on 11/?/10 test
31
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7th Grade
11/06/2010
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Term
Hidden lines
 Definition
Short dashed lines that indicate there is an object feature there that we cannot see in that view
Term
Center lines
 Definition
A line with a dash in the middle that indicates the center of an object (usually a hole)
Term
Object lines
 Definition
Medium thickness lines that show the outline of an object being drawn
Term
Guide lines
 Definition
Thin light lines that help us get the correct height on our drawing
Term
Dimension lines
 Definition
Medium thickness lines that is used to show the different dimensions of an object.
Term
Construction lines
 Definition
Thin, light lines that we use premerily to start our drawing.
Term
Border lines
 Definition
Very thick, bold lines that show the border of your object
Term
What are the three dimensions?
 Definition
Length, width, and height
Term
What are the three views?
 Definition
Front, top, and right
Term
Which dimensions are in the top view?
 Definition
Width and length
Term
Which dimensions are in the right side view?
 Definition
Height and width
Term
Which dimensions are shown in the front view?
 Definition
Length and height
Term
Where is the top view located?
 Definition
Above the front view
Term
Where is the front view located?
 Definition
At the bottom left
Term
Where is the right side located?
 Definition
To the right of the front view.
Term
Which drafting tool do you use for vertical lines?
 Definition
A t-square
Term
What drafting tool(s) do you use for vertical lines?
 Definition
45 degree angles
Term
Which drafting tool(s) do you use for arcs and circles?
 Definition
A circle template
Term
How tall is most lettering?
 Definition
1/8" tall
Term
What is technical drawings a form of?
 Definition
an "L"
Term
Foreshortening
 Definition
When an object is not parallel to the projection plane, and it is not in true face.
Term
Vanishing points
 Definition
Points that look like they disappear
Term
True face
 Definition
when you can see all the sides of an isometric drawing
Term
Cavalier oblique
 Definition
An oblique drawing in which the depth lines are shown at full size.
Term
Cabinet oblique
 Definition
An oblique drawing in which the depth lines are shown at half size.
Term
Isometric
 Definition
A pictorial drawing in which two horozontal axis at 30 degrees to horozontal and vertical axis are used to show the objects length, width, and height
Term
Angular Perspective
 Definition
Are what our eyes see in nature and that is why it is the most accurate method of drawing an object in three dimensions
Term
Parallel Perspective
 Definition
A drawing in which lines are protected to one or more vanishing points to show depth of an object as it would appear when viewed at a certain position
Term
Sketch
 Definition
A quick way to communicate your idea . Parts of the sketches should have an appropriate porportion
Term
What do dimensions tell us?
 Definition
Dimensions gives you an idea of how big an object is
Term
List the different types of pictorials:
 Definition
oblique, isometric, and perspective
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