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IED #4
Lesson 2.1 Vocabulary
| Question | Answer |
|---|---|
| acute triangle | a triangle that contains only angles that are less than 90 degrees |
| angle | the amount of rotation needed to bring one line or plane into coincidence with another, generally measured in radians or degrees |
| area | the extent or measurement of a surface |
| axis | an imaginary line through a body, about which it rotates |
| computer-aided design | the use of a computer to assist in the process of designing a part, circuit, building, etc. |
| cartesian coordinate system | a rectangular coordinate system created by three mutually perpendicular coordinate axes, commonly labeled X, Y, and Z |
| chamfer | a small angled surface formed between two surfaces |
| circle | the set of all points in a plane at a given distance from a given point in the plane |
| circumscribe | to draw a figure around another, touching it at points but not cutting it |
| counterbore | a cylindrical recess around a hole, usually to receive a bolt head or nut |
| countersink | a conical-shaped recess around a hole, often used to receive a tapered screw |
| 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 |
| diameter | a straight line passing from side to side through the center of a circle or sphere |
| ellipse | 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 |
| extrusion | a manufacturing process that forces material through a shaped opening |
| geometric constraint | constant, non-numerical relationships between the parts of a geometric figure |
| inscribe | to draw a figure within another so that their boundaries touch but do not intersect |
| mass | the amount of matter an object contains |
| numberic constraint | a number value, or algebraic equation that is used to control the size or location of a geometric figure |
| obtuse triangle | a triangle with one angle that is greater than 90 degrees |
| origin | a fixed point from which coordinates are measured |
| parallelogram | a quadrilateral with opposite sides parallel |
| pattern | a repeated decorative design |
| pi | the numerical value of the ratio of the circumference of a circle to its diameter |
| plane | a flat surface on which a straight line joining any two points would wholly lie |
| polygon | a closed geometric figure in a plane formed by connecting line segments endpoint to endpoint with each segment intersecting exactly two others |
| prism | a solid geometric figure whose two ends are similar, equal, and parallel rectilinear figures, and whose sides are parallelograms |
| quadrilateral | a four-sided polygon |
| radius | a straight line from the center to the circumference of a circle or sphere |
| rectangle | a parallelogram with 90 degree angles |
| regular polygon | a polygon with equal angles and equal sides |
| revolution | creating a 3D solid or surface by revolving a 2D shape about an axis |
| right triangle | a triangle that has a 90 degree angle |
| rotation | turning around an axis or center point |
| round | a rounded exterior blend between two surfaces |
| solid | a three-dimensional body or geometric figure |
| solid modeling | a type of 3D CAD modeling that represents the volume of an object, not just its lines and surfaces |
| space | the dimensions of height, depth, and width within which all things exist and move |
| square | a regular polygon with four equal sides and four 90 degree angles |
| surface area | the sum of all the areas of all the faces or surfaces that enclose a solid |
| tap | to cut internal threads |
| taper | gradual diminution of width or thickness in an elongated object |
| three-dimensional | having the dimensions of height, width, and depth |
| triangle | a polygon with three sides |
| two-dimensional | having the dimensions of height and width, height and depth, or width and depth only |
| vertex | each angular point of a polygon, polyhedron, or other figure |
| volume | the amount of space occupied by a substance or object or enclosed within a container |
| working drawings | drawings that convey all of the information needed to manufacture and assemble a design |
Created by:
nnguyen
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