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Math flash cards 101
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7th Grade
02/26/2014
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Term
Point
 Definition
A point is a location. A point has no size. A point is represented by a small dot.
Term
Line
 Definition
A line is an infinite set of points that extends in two opposite directions.
Term
Plane
 Definition
A pane is a flat surface that has no thickness. A plane extends without end in all directions.
Term
Segment
 Definition
A segment is part of a line with two end points in between.
Term
Ray
 Definition
A ray is part of a line consisting of one end point and all points on one side of the end point.
Term
Parallel lines
 Definition
Two lines on a plane that never meet. They are always the same distance apart.
Term
Skew lines
 Definition
Two nonparallel lines in space that do not intersect are called skew lines
Term
Congruent Lines
 Definition
Adjust any line segment below by dragging an orange dot at its ends. The other line segment will change to remain congruent with it.
Term
Supplementary lines
 Definition
Two Angles are Supplementary if they add up to 180 degrees.
Term
Complementary lines
 Definition
Two Angles are Complementary if they add up to 90 degrees (a Right Angle).
Term
Angle
 Definition
The amount of turn between two straight lines that have a common end point (the vertex).
Term
Geometry
 Definition
the branch of mathematics concerned with the properties and relations of points, lines, surfaces, solids, and higher dimensional analogs.
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