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Tech Unit 1 Vocab

8th Grade

TermDefinition
Drafting Universal language that uses drawings and numbers to represent an object.
Dimensioning Adding measurements to a drawing.
To Find the Center a Drawing Bisect the corners.
To Center a Drawing Divide the measurements in half.
Transferring Using one line to draw another.
T-square Used to draw horizontal lines.
Triangles Used to draw angles and vertical lines.
Compasses/Circle Templates Used to draw circles.
Brushes Used to clean off drawings.
Protractors Used to measure any angle between 0-180 degrees.
Eraser Shields Used to protect good lines while deleting bad lines.
Pencils Contain graphite.
Layout Drawing 2 dimensional and shows the size and shape of an object.
Orthographic Projection 3 separate views of the same object.
Horizontal Lines Go side to side.
Vertical Lines Go up and down.
Object Lines Should be sharp and dark.
Construction Lines Should be light. Used to layout an object's basic shape.
Center Lines Show the middle of an object.
Extension Lines Light lines that extend from the object and must not touch.
Dimension Lines Lines that have arrows and numbers to indicate sizes.
Hidden Lines Lines that describe a part of an object that is not visible.
Created by: Lana Smith
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