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39 Cards in this Set
- Front
- Back
Acute Triangle |
A triangle that contains only angles that are less than 90 degrees |
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Angle |
The amount of rotation needed to bring one line or plane into coincidence with another, generally measured in radians or degrees |
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Area |
The number of square units required to cover a surface |
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Axis |
An imaginary line through a body, about which it rotates. An imaginary line about which a regular figure is symmetrically arranged. A fixed reference line for the measurement of coordinates. |
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Center of Gravity |
A 3D point where the total weight of the body may be considered to be concentrated |
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Centroid |
A 3D point defining the geometric center of a solid |
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Circle |
A round plane figure whose boundary consists of points equidistant from the center |
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Circumscribe |
A triangle located round a polygon such as a circle. To draw a figure around another, touching it at points but not cutting it. |
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Cylinder |
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 two circles |
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Density |
The measure of mass density is a measure of mass per volume |
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Diameter |
A straight line passing from side to side through the center of a circle or sphere |
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Ellipse |
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 |
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Fillet |
A curve formed at the interior intersection between two or more surfaces |
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Inscribe |
To draw a figure within another so that their boundaries touch but do not intersect |
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Mass |
The amount of matter in an object or the quantity of the inertia of the object |
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Meniscus |
The curved upper surface of a liquid column that is concave when the containing walls are wetted by the liquid and convex when not |
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Obtuse Triangle |
A triangle with one angle that is greater than 90 degrees |
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Parallelogram |
A four-sided polygon with both pairs of opposite sides parallel |
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Pi (TT) |
The numerical value of the ratio of the circumference of a circle to its diameter of approximately 3.14159. |
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Polygon |
Any plane figure bounded by straight lines |
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Principal Axes |
The lines of intersection created from three mutually perpendicular planes, with the three planes' point of intersection at the centroid of the part |
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Prism |
A solid geometric figure whose two ends are similar, equal, and parallel rectilinear figures, and whose sides are parallelograms |
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Quadrilateral |
A four-sided polygon |
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Radius |
A straight line from the center to the circumference of a circle or sphere |
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Rectangle |
A parallelogram with 90 degree angles. |
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Regular Polygon |
A polygon with equal angles and equal sides |
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Right Triangle |
A triangle that has a 90 degree angle |
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Round |
Two or more exterior surfaces rounded at their intersections |
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Square |
A regular polygon with four equal sides and four equal angles |
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Surface Area |
The squared dimensions of the exterior surface |
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Tangent |
A straight or curved line that intersects a circle or arc at one point only |
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Title Block |
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 |
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Triangle |
A polygon with three sides |
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Vertex |
Each angular point of a polygon, polyhedron, or other figure |
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Volume |
The amount of three-dimensional space occupied by an object or enclosed within a container |
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Quadrilateral |
A four-sided polygon |
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Space |
The dimensions of height, depth, and width within which all things exist and move. A free or unoccupied area or expanse. |
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Maximum Material Condition (MMC) |
The largest limit of an external feature and the smallest size limit of an internal feature |
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Tap |
To cut internal threads |