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Math Vocab
For the chapter 1 test
36
Mathematics
9th Grade
10/18/2012

Additional Mathematics Flashcards

 


 

Cards

Term
Point
Definition

Point is a location

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Term
Line
Definition

A line is a basic undefined term of geometry. A line is made up of points and has no thickness or width. In a figure, a line is shown with an arrowhead at each end. Lines are usually named by a lowercase script letters or by writing capital letters for two points on the line, with a double arrow over the pair of letters.

 

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Term
Plane
Definition

Is a flat surface that goes on forever

 

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Term
Collinear
Definition

Points on the same line

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Term
Coplaner
Definition

Points on the same plane

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Term
Acute Angle
Definition

Angles that are less than 90 degrees

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Term
Obtuse Angle
Definition

Angles that are greater than 90 degrees

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Term
Right Angle
Definition

Angle that is 90 degrees

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Term
Straight Angle
Definition

Angle that is 180    

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Term
Complementary Angles
Definition

Two angles that measure up to 90 degrees

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Term
Supplementary Angles
Definition

Two angles that add up to 180 degrees

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Term
Triangle
Definition

Polygon with three sides

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Term
Quadrilateral
Definition

Polygon with four sides

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Term
Pentagon
Definition

Polygon with five sides

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Term
Hexagon
Definition

Polygon with six sides

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Term
Octagon
Definition

Polygon with eight sides

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Term
Decagon
Definition

Polygon with ten sides

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Term
Dodecagon
Definition

Polygon with 12 sides

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Term
n-gon
Definition

A polygon with n sides

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Term
concave
Definition

A polygon for which there is a line containing a side of the polygon that aslo contains a point in the interior of the polygon

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Term
convex
Definition

A polygon for which there is no line that contains both a side of the polygon and a point in the interior of the polygon

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Term
regular
Definition

A convex polygon in which all of the sides are congruent and all of the angles are congruent

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Term
irregular
Definition

A polygon that is not regular

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Term
diagonal
Definition

In a polygon a segment that connects nonconsecutive vertices of the polygon

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Term
side
Definition

one of the surfaces forming the outside of or bounding a thing, or one of the lines bounding afigure

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Term
perimeter
Definition

The sum of the length of the sides of a polygon

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Term
vertical angle
Definition

Two nonadjacent angles formed by two intersecting lines

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Term
adjacent angle
Definition

Two angles that lie in the same plane, have a common vertex and a common side, but no common interior points.

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Term
linear pair
Definition

A pair of adjacent angles whose noncommon sides are opposite rays.

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Term
perpendicular lines
Definition

Lines that form right angles

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Term
midpoint
Definition

The point halfway between the endpoints of a segment

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Term
bisector
Definition

Cuts an angle into two equal parts

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Term
congruent
Definition

Having the same measure

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Term
ray
Definition

PQ is a ray if it is the set of points consisting of PQ and all points S for which Q is between P and S

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Term
opposite rays
Definition

Two rays BA and BC such that B is between A and C

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Term
vertex
Definition
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