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PLTW - IED Unit 5 Key Terms
Geometry of Design
Terms in this set (36)
A triangle that contains only angles that are less than 90 degrees.
a biased way of looking at or presenting something
describes the measure of the two-dimensional space enclosed by a shape
. Primary direction in a coordinate system
Center of Gravity
.A 3D point where the total weight of the body may be considered
A 3D point defining the geometric center of a solid
A closed curve with coplanar points at the same distance from the center point
To draw a figure around another, touching it at points but not cutting it.
a solid bounded by a cylindrical surface and two parallel planes (the bases)
The mass per unit volume of an object
The straight distance from one outside curved surface through the center point to the opposite outside curved surface
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
A curved surface formed at the interior intersection of two or more surfaces of an object
A shape drawn inside a circle
the quantity of matter in an object.
The curved upper surface of a liquid column that is concave when the containing walls are wetted by the liquid and convex when not.
A triangle with one angle that is greater than 90 degrees.
a four-sided polygon with opposite sides parallel
The numerical value of the ratio of the circumference of a circle to its diameter of approximately 3.14159
A closed plane figure with three or more straight sides
The lines of intersection created from three mutually perpendicular planes, with the three planes' point of intersection at the centroid of the part.
A solid geometric figure whose two ends are similar, equal, and parallel rectilinear figures, and whose sides are parallelograms
a four-sided polygon
The distance from the center point to the outside curved surface.
A four-sided polygon with four right angles
a polygon with all sides and all angles equal
A triangle that has a 90 degree angle
Two or more exterior surfaces rounded at the intersection
A polygon with four equal sides and four right angles
is the sum of all the areas of the faces of a three-dimensional solid.
A line that intersects a circle or an arc at one and only one point.
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 a title strip.
a three-sided polygon
Each angular point of a polygon, polyhedron, or other figure
The amount of three-dimensional space occupied by an object or enclosed within a container.
A four-sided polygon.
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