# Shared Flashcard Set

## Details

Unit 5 Key Terms
Introduction to Engineering Design Unit 5
36
Engineering
Not Applicable
12/17/2012

Term
 Acute Triangle
Definition
 A triangle that contains only angles that are less than 90 degrees.
Term
 Angle
Definition
 The amount of rotation needed to bring one line or plane into coincidence with another, generally measured in radians or degrees.
Term
 Area
Definition
 The number of square units required to cover a surface.
Term
 Axis
Definition
 1. An imaginary line through a body, about which it rotates. 2. An imaginary line about which a regular figure is symmetrically arranged. 3. A fixed reference line for the measurement of coordinates.
Term
 Center of Gravity
Definition
 A 3D point where the total weight of the body may be considered to be concentrated.
Term
 Centroid
Definition
 A 3D point defining the geometric center of a solid.
Term
 Circle
Definition
 A round plane figure whose boundary consists of points equidistant from the center.
Term
 Circumscribe
Definition
 1. A triangle located round a polygon such as a circle. 2. To draw a figure around another, touching it at points but not cutting it.
Term
 Cylinder
Definition
 A solid composed of two congruent circles in parallel planes, their interiors, and all the line segments parallel to the axis with endpoints on the circles.
Term
 Density
Definition
 The measure of mass density is a measure of mass per volume.
Term
 Diameter
Definition
 A straight line passing from side to side through the center of a circle or sphere.
Term
 Ellipse
Definition
 A shape generated by a point moving in a plane so that the sum of its distances from two other points (the foci) is constant and equal to the major axis.
Term
 Fillet
Definition
 A curve formed at the interior intersection between two or more surfaces.
Term
 Inscribe
Definition
 To draw a figure withing another so that their boundaries touch but do not intersect.
Term
 Mass
Definition
 The amount of matter in an object or the quantity of inertia of the object.
Term
 Meniscus
Definition
 The curved upper surface of a liquid column that is concave when the containing walls are wetted by the liquid and convex when not.
Term
 Obtuse Triangle
Definition
 A triangle with one angle that is greater than 90 degrees.
Term
 Parallelogram
Definition
 A four-sided polygon with both pairs of opposite sides parallel.
Term
 Pi
Definition
 The numerical value of the ration of the circumference of a circle to its diameter of approximately 3.14159.
Term
 Polygon
Definition
 Any plane figure bounded by straight lines.
Term
 Principal Axes
Definition
 The lines of intersection created from three mutually perpendicular planes, with the three planes' point of intersection at the centroid of the part.
Term
 Prism
Definition
 A solid geometric figure whose two ends are similar, equal, and parallel rectilinear figures, and whose sides are parallelograms.
Term
Definition
 A four-sided polygon.
Term
Definition
 A straight line from the center to the circumference of a circle or sphere.
Term
 Rectangle
Definition
 A parallelogram with 90 degree angles. A square is also one.
Term
 Regular Polygon
Definition
 A polygon with equal angles and equal sides.
Term
 Right Triangle
Definition
 A triangle that has a 90 degree angle.
Term
 Round
Definition
 Two or more exterior surfaces rounded at their intersections.
Term
 Square
Definition
 A regular polygon with four equal sides and four 90 degree angles.
Term
 Surface Area
Definition
 The squared dimensions of the exterior surface.
Term
 Tangent
Definition
 A straight or curved line that intersects a circle or arc at one point only.
Term
 Title Block
Definition
 A table located in the bottom right-hand corner of an engineering drawing that identifies, in an organized way, all of the necessary information that is not given on the drawing itself. Also referred to as title strip.
Term
 Triangle
Definition
 A polygon with three sides.
Term
 Vertex
Definition
 Each angular point of a polygon, polyhedron, or other figure.
Term
 Volume
Definition
 The amount of three dimensional space occupied by an object or enclosed within a container.
Term