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27 Cards in this Set
 Front
 Back
Opposing rays

Rays that go in opposite directions


Absolute value

How far apart two numbers are from each other (always positive)


Collineral points

Points all in one line


Coplanar points

Points all in one plane


Intersection of two figures

Set of points that are in both figures


Length

Distance between the endpoints


Ruler Postulate

1. The points on a line can be paired with the real numbers in a way that any 2 points can have coordinates 0 and 1
2. The distance between any two points equals the absolute value of the diference of their coordinates 

Segment Addition Postulate

If B is between A and C, then
AB + BC = AC 

Congruent objects

Two objects that have the same size and shape


Midpoint of a segment

Point that divides the segment into two congruent segments


Bisector of a segment

Line, segment, ray, or plan that intersects the segment at its midpoint


Angle

Figure formed by two rays that have the same endpoint


Angle Addition Postulate

If point B lines in the interior of AOC, then
mAOB + mBOC = mAOC 

Adjacent angles

Two angles that have a common vertex and a common side but not common interior points


Bisector of an angle

Ray that divides the angle into two congruent adjacent angles


Acute angle

Measure between 0 and 90


Right angle

Measure 90


Obtuse angle

Measure between 90 and 180


Straight angle

Measure 180


Postulate 5

A line contains at least two points; a plane contains at least three points not all in one line; space contains at least four points not all in one plane


Postulate 6

Through any two points there is exactly one line


Postulate 7

Through any three points there is at least one plane, and through any three noncollinear points there is exactly one plane


Postulate 8

If two points are in a plane, then the line that contains the points is in that plane


Postulate 9

If two planes intersect, then their intersection is a line


Theorem 11

If two lines intersect, then they intersend in exactly one point


Theorem 12

Through a line and a point notin the line there is exaclty one plane


Theorem 13

If two lines intersect, then exactly one plane contains the line
