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27 Cards in this Set
- Front
- Back
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Opposing rays
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Rays that go in opposite directions
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Absolute value
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How far apart two numbers are from each other (always positive)
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Collineral points
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Points all in one line
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Coplanar points
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Points all in one plane
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Intersection of two figures
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Set of points that are in both figures
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Length
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Distance between the endpoints
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Ruler Postulate
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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 |
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Segment Addition Postulate
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If B is between A and C, then
AB + BC = AC |
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Congruent objects
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Two objects that have the same size and shape
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Midpoint of a segment
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Point that divides the segment into two congruent segments
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Bisector of a segment
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Line, segment, ray, or plan that intersects the segment at its midpoint
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Angle
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Figure formed by two rays that have the same endpoint
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Angle Addition Postulate
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If point B lines in the interior of AOC, then
mAOB + mBOC = mAOC |
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Adjacent angles
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Two angles that have a common vertex and a common side but not common interior points
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Bisector of an angle
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Ray that divides the angle into two congruent adjacent angles
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Acute angle
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Measure between 0 and 90
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Right angle
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Measure 90
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Obtuse angle
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Measure between 90 and 180
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Straight angle
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Measure 180
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Postulate 5
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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
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Postulate 6
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Through any two points there is exactly one line
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Postulate 7
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Through any three points there is at least one plane, and through any three noncollinear points there is exactly one plane
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Postulate 8
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If two points are in a plane, then the line that contains the points is in that plane
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Postulate 9
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If two planes intersect, then their intersection is a line
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Theorem 1-1
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If two lines intersect, then they intersend in exactly one point
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Theorem 1-2
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Through a line and a point notin the line there is exaclty one plane
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Theorem 1-3
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If two lines intersect, then exactly one plane contains the line
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