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Geometry
The Vanguard School- Geometry
18
Mathematics
9th Grade
09/03/2008

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Cards

Term
Point
Definition
That which has no part.
Term
Line
Definition
That which has infinite length.
Term
Line Segment
Definition
A line bounded by two end points.
Term
Plane
Definition
A flat 2-D surface without boundaries
Term
Collinear Points
Definition
Points that can be contained by a single line.
Term
Noncollinear Points
Definition
Points such that no single line can contain them.
Term
Coplanar Points
Definition
Points contained by a plane.
Term
Concurrent Lines
Definition
Lines that contain a common point.
Term
Ray
Definition
A part of a line that extends endlessly in one direction.
Term
Angle
Definition
Two rays that start off from the same point.
Term
Polygon
Definition
A figure bounded by line segments and lies in a plane.
Term
Polyhedron
Definition
A 3-dimensional figure(object) bounded by polygons.
Term
Perimeter
Definition
The sum of the lengths of it's sides.
Term
Area
Definition
The surface included within a set of lines.
Term
Circle
Definition
The set of all points in a plane that are a fixed distance from a given point in a plane.
Term
Radius
Definition
The fixed distance from the center to a point on the circle.
Term
Bisect
Definition
To divide it into two equal parts.
Term
Euclid
Definition
Wrote the book, Elements, in 300 B.C.
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