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# IED Definitions Pt 1

### IED Word Definition

TermDefinition
Center Line A line which define the center of arcs, circles, or symmetrical parts.
Dimension Line A line which represents distance.
Construction Line Lightly drawn lines to guide drawing other lines and shapes.
Extension Line A line which represents where a dimension starts and stops.
Object Line A heavy solid line used on a drawing to represent the outline of an object.
Hidden Line A line type that represents an edge that is not directly visible.
Constraint The state of being noticeably different from something else when put or considered together.
Innovation An improvement of an existing technological product, system, or method of doing something.
Engineering Notebook A book in which an Engineer will formally document, in chronological order, all of his/her work that is associated with a specific design project.
Invention A new product, system, or process that has never existed before, created by study and experimentation.
Design Process A systematic problem-solving strategy.
Brainstorm A group technique for solving problems, generating ideas, stimulating creative thinking, etc. by unrestrained spontaneous participation in discussion.
Histogram A graph of vertical bars representing the frequency distribution of a set of data.
Median and/or Mean A measure of center in a set of numerical data.
Statistics Collection of methods for planning experiments, obtaining data, organizing, summarizing, and presenting, analyzing, interpreting and drawing conclusions based on data.
Normal Distribution A function that represents the distribution of variables as a symmetrical bell-shaped graph.
Mode The number that occurs most frequently in a given data set.
Standard Deviation The distance of a value in a population from the mean value of the population.
Significant Figures The digits in a decimal number that carry meaning by contributing to the precision or accuracy of the quantity.
Prototype A full-scale working model used to test a design concept by making actual observations and necessary adjustments.
3 Spatial Dimensions Height, Width, and Depth.
Isometric Drawing A form of pictorial sketch in which all three drawing axes form equal angles to 120 degrees with the plane of projection.
Calipers A measuring instrument having two adjustable jaws typically used to measure distance or thickness.
Pictorial Drawings A method of representing three-dimensional objects on a plane.
Multi-View Drawing A drawing which contains views of an object projected onto two or more orthographic planes.
Working Drawings A drawing that is used to show material, size, and shape of a product for manufacturing purposes.
Central Tendency "Center" of a distribution. Mean, Median, Mode.
Physical Model A physical representation of an object. Prototypes and Appearance Models are examples of these.
Range The set of output values of a function.
Solid A three-dimensional body or geometric figure.
Domain The set of input values of a function.
Solid Modeling A type of 3D CAD modeling that represents the volume of an object, not just its lines and surfaces.
Function 1. A relationship from one set (called the Domain) to another set (called the Range) that assigns to each element of the domain exactly one element of the range. 2. The action or actions that an item is designed to preform.
Mathematical Modeling The process of choosing and using appropriate mathematics and statistics to analyze empirical situations, to understand them better, and to improve decisions.
Pattern A repeated decorative design.
Scale Model An enlarged or reduced representation of an object that is usually intended for study purposes.
Plane A flat surface on which a straight line joining any two points would wholly lie.
Mock-Up A model or replica of a machine or structure for instructional or experimental purposes. Also referred to as an Appearance Model.
Model A visual, mathematical or three-dimensional representation in detail of an object or design, often smaller than the original.
Component A part or element of a larger whole.
Created by: MacDiggyDwarf

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