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Chapter 1 Vocabulary

Chapter 1 Vocabular

QuestionAnswer
A conclusion. conjecture
An example for which the conjecture is incorrect. counterexample
A location. point
The set of all points. space
A series of points that extends in two opposite directions without end. line
Points that lie on the same line. collinear points
A flat surface that has no thickness. plane
Points and lines in the same plane. coplanar
The part of a line consisting of two endpoints and all points between them. segment
The part of a line consisting of one endpoint and all the point of the line on one side of the endpoint. ray
Two collinear rays with the same endpoint. opposite rays
Coplanar lines that do not intersect. parallel lines
Lines that are not parallel and do not intersect. skew lines
Planes that do not intersect. parallel planes
Two segment with the same length. congruent segments
a point that divides the segment into two congruent segments. midpoint
Angles with the same measure. congruent angles
An angle with the measure of 180 degrees. straight angle
Two angles whose measures have the sum of 90. complementary angles
Two angles whose measures have the sum of 180. supplementary angles
Two angles whose sides are opposite rays. vertical angles
Two coplanar angles with a common side, a common vertex, and no common interior points adjacent angles
Two lines that intersect to form right angles. perpendicular lines
Created by: nphilip4
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