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Geometric Relationships
IED Unit 5
63
Engineering
Not Applicable
03/31/2004

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Term
Rectangle
Definition
A four-sided plane figure with four right angles.
Term
Radius
Definition
The distance from the center point to the outside curved surface.
Term
Supplemental Angle
Definition
Two angles added together equaling 180
degrees.
Term
Acute angle
Definition
An angle less than 90 degrees.
Term
Right Triangle
Definition
A triangle having a 90 degree angle or right angle in it.
Term
Polygon
Definition
A closed plane figure with three or more
straight sides.
Term
Point
Definition
An exact location in space.
Term
Arc
Definition
A part of a circle.
Term
Complementary Angle
Definition
Two angles added together equaling 90 degrees.
Term
Center Point
Definition
The origin of a circle or arc.
Term
Obtuse Angle
Definition
An angle greater than 90 degrees.
Term
Line
Definition
The path of an infinite series of points.
Term
Equilateral Triangle
Definition
A triangle in which all angles are equal and all sides have equal lengths.
Term
Bisector
Definition
To divide an angle into two equal parts.
Term
Diameter
Definition
The straight distance from one outside curved surface through the center point to the opposite outside curved surface.
Term
Circle
Definition
A closed curve with all the points on the circle at the same distance from the center point.
Term
Isosceles Triangle
Definition
A triangle which has two sides of equal length and two equal interior angles.
Term
Circumference
Definition
The distance around the outside of the circle.
Term
Ellipse
Definition
The group or set f all points in the same plane whose sum of distances from two foci is constant. It looks like a squashed circle or a circle viewed at an angle.
Term
Inscribed
Definition
A shape drawn inside of a circle.
Term
Horizontal
Definition
A line parallel to the horizon.
Term
Vertical
Definition
A line perpendicular to the horizon.
Term
Parallel
Definition
Two or more coplanar lines having equal distance between them.
Term
Perpendicular
Definition
Two lines forming a 90 degree angle.
Term
Tangent
Definition
A line touching an arc or circle at only one point.
Term
Concentric
Definition
Arcs and circles sharing the same center.
Term
Collinear
Definition
Lines or points belonging to the same line, or an extension of a line.
Term
Coincident
Definition
Two points fixed together.
Term
Equal
Definition
Of the same length.
Term
Coplanar
Definition
Belonging to the same plane.
Term
Chord
Definition
A straight line with opposite ends that terminate on the circumference of a circle.
Term
Circumscribed
Definition
A shape drawn around a circle.
Term
Hexagon
Definition
A polygon with six sides.
Term
Octagon
Definition
A polygon with eight sides.
Term
Pentagon
Definition
A polygon with five sides.
Term
Quadrilateral
Definition
A polygon with four sides.
Term
Rhombus
Definition
A quadrilateral with four equal sides and opposite angles equal.
Term
Right Angle
Definition
An angle measuring 90 degrees.
Term
Scalene Triangle
Definition
A triangle with no sides equal and no angles equal.
Term
Square
Definition
A polygon with four equal sides and four right angles.
Term
Trapezoid
Definition
A quadrilateral with two parallel sides.
Term
Vertex
Definition
The point where the two sides of an angle intersect.
Term
Fixed Point
Definition
Locking a point to a position relative to the sketch coordinate system.
Term
Absolute Coordinates
Definition
A method of plotting points whereby distances are measured from the origin.
Term
Axis
Definition
Primary direction in a coordinate system.
Term
Cartesian Coordinate System
Definition
A rectangular coordinate system created by three perpendicular axes labeled X, Y, and Z.
Term
Origin
Definition
The point at which axes intersect.
Term
Polar
Definition
A method of plotting points whereby distances are measured using angles.
Term
Relative
Definition
A method of plotting points whereby distances are measured from the previous point.
Term
The shortest distance between two points.
Definition
What is a straight line?
Term
Length
Definition
Which of the following do lines have:
a)length?
b)width?
c)thickness?
Term
None of these
Definition
Which of the following do points have:
a)length?
b)width?
c)thickness?
Term
Locations in space
Definition
What are points used to indicate?
Term
A point can be defined as a set of coordinates (x,y) on the Cartesian plane.
Definition
How can a point be defined?
Term
Cartesian
Definition
The most commonly used coordinate system today for identifying points.
Term
180 degrees
Definition
The sum of the interior angles of a triangle.
Term
Since there are 360 degrees in a circle, take 360 degrees and divide by the number of sides in the polygon.
Definition
How do you find the central angle of an inscribed or circumscribed polygon?
Term
Rhomboid
Definition
A parallelogram with opposite sides and opposite angles are equal.
Term
Trapezium
Definition
A quadrilateral with no sides equal.
Term
Heptagon
Definition
A polygon with seven sides.
Term
Nonagon
Definition
A polygon with nine sides.
Term
Decagon
Definition
A polygon with ten sides.
Term
(1) Take the given angle.
(2) Strike Arc R at any distance.
(3) From the two points that Arc R intersect your angle, strike two additional arcs at any given distance (as long as they are equal)
(4) Draw a line from the vertex of the angle to where the
Definition
Tell in list format how to bisect an angle.
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