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Geometry Section 1.1
Definitions, Postulates, etc. from Larson Geometry 2008
8
Mathematics
10th Grade
08/19/2009

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Cards

Term
Between
Definition
A point B is "between" two other points A and C if they are all collinear and you must pass through B to get from A to C.
Term
Undefined Term
Definition
A term which has no definition. The undefined terms in Chapter 1 are Point, Line, Plane.
Term
Plane
Definition
An undefined term. Consists of at least 3 NONCOLLINEAR points. Is named by 3 points. Has length and width. Continues on forever in all directions.
Term
Point
Definition
An undefined term. Has no dimension. Is denoted on paper by a dot, labeled with a capital letter.
Term
Line
Definition
An undefined term. Must contain at least two points. Goes on forever in both directions. Has length. Is named by any two points on the line.
Term
Ray
Definition
The portion of a line containing one endpoint and all other points on one side of the line. Named by the endpoint and another point it goes through. Endpoint letter must come first!
Term
Line Segment
Definition
The portion of a line containing the endpoints and all the points between them. Named by the endpoints (in either order).
Term
Intersection
Definition
Two figures intersect if they have one or more points in common. The intersection of two lines is a point. The intersection of two planes is a line. The intersection of a line and a plane is a point OR a line.
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