PLTW - IED Unit 2 Key Terms with
Definitions
Cabinet Pictorial - Answer-Oblique pictorial where depth is represented as half scale compared to
the height and width scale.
Cavalier Pictorial - Answer-Oblique pictorial where height, width, and depth are represented at full
scale.
Center Line - ...
Edge - Answer✔✔-The line along which two surfaces of a solid meet.
Ellipse - Answer✔✔-A regular oval shape, traced by a point moving in a plane so that the sum of its
distances from two other points is constant, or resulting when a cone is cut by an oblique plane which
does not intersect the base.
Extension Line - Answer✔✔-Line which represents where a dimension starts and stops.
Freehand - Answer✔✔-Sketching which is done manually without the aid of instruments such as rulers.
Grid - Answer✔✔-A network of lines that cross each other to form a series of squares or rectangles.
Height - Answer✔✔-The measurement associated with an object's top-to-bottom dimension.
Hidden Line - Answer✔✔-A line type that represents an edge that is not directly visible.
Isometric Sketch - Answer✔✔-A form of pictorial sketch in which all three drawing axes form equal
angles of 120 degrees with the plane of projection.
Leader Line - Answer✔✔-Line which indicates dimensions of arcs, circles and detail.
Line - Answer✔✔-1. A long thin mark on a surface. 2. A continuous extent of length, straight or curved,
without breadth or thickness; the trace of a moving point. 3. Long, narrow mark or band.
Line Conventions - Answer✔✔-Standardization of lines used on technical drawings by line weight and
style.
Line Weight - Answer✔✔-Also called line width. The thickness of a line, characterized as thick or thin.
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