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Definition
A segment that can be measured because it has two endpoints. 


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Definition


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Definition
Segments that have the same measure 


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Distance(Between 2 Points) 

Definition
The length of the segment with those points as its endpoints. 


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Definition
The point halfway between the endpoints of a segment. 


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The point of intersection of two lines crossing at the midpoint. 


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Definition
Any segment,line, or plane that intersects a segment at its midpoint. 


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Definition
A part of a line with one endpoint. 


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Definition
Two non collinear rays that have a common endpoint. 


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Definition


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Definition
The units angles are measured in. 


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Definition
A ray that divides an angle into two congruent sides. 


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Definition
An angle below 90 degrees. 


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Definition
An angle that is above 90 degrees. 


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Definition
An angle that is 90 degrees. 


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Definition


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Definition
Two angles that lie in the same plane and have a common vertex and a common side, but no common interior. 


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Definition
Two nonadjacent angles formed by two intersecting lines. 


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Definition
Two angles with measures that have the sum of 90 degrees. 


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Definition
Two angles with measures that have a sum of 180 degrees. 


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Definition
A pair of adjacent angles with noncommon sides that are opposite rays. 


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Definition
Lines,segments,or rays that form right angles. 


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Definition
Made up of points and has no thickness or width. 


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Definition


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Definition
A flat surface made up of points that extend indefinitely in all directions. 


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Definition
Points that lie on the same line. 


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Definition
Points that lie in the same plane. 


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Definition
Reasoning that uses a number of specific examples to arrive at a conclusion. 


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Definition
A concluding statement reached using inductive reasoning. 


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Definition
One false example to show that a conjecture is not true. 


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Definition
A sentence that is true or false. 


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Definition
Has the opposite meaning as well as an opposite truth. 


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Definition
The phrase immediately following the word if of a conditional statement. 


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Definition
The phrase immediately following the word then of a conditional statement. 


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Definition
A statement that can be in ifthen form. 


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Definition
The conjuction of a conditional statement and its converse. 


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Definition
By exchanging the hypothesis and conclusion of the conditional. 


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Definition
By negating both the hypothesis and conclusion of the conditional. 


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Definition
By negating both the hypothesis and the conclusion of the converse of the conditional. 


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Definition
If p>q is a true statement and p is true, then q is true. 


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Definition
If p>q and q>r are true. Statements, then p>r is a true statement. 


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Definition
Uses facts,rules, and definitions, or properties to reach logical conclusions from given statements. 


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Definition
A statement that is accepted as true without proof. 


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Definition
Coplanar lines that do not intersect. 


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Definition
Lines that do not intersect and are not coplanar 


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Definition
A line that intersects two or more coplanar lines at two different points. 


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Definition
A nonadjacent interior angles that lie on opposite sides of a transversal. 


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Definition
A nonadjacent exterior angles that lie on opposite sides of a tranversal. 


Term

Definition
Lie on the same side of transversal and on the same side of lines q and r. 


Term

Definition
Are interior angles that lie on the same side of a transversal. 


Term

Definition
Exterior angles that lie on the same of a transversal. 


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Definition


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Definition


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Definition


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Definition


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Definition
At least 2 congruent sides. 


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Definition
The side opposite to the right angle of a triangle. 


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Definition
When a bisector is perpendicular to the segment. 


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Definition
When three or more lines intersect at a common point. 


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Definition
The point where concurrent lines intersect. 


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Definition
The point of concurrency of the perpendicular bisector. 


Term

Definition
The angle bisectors' of a triangle are concurrent, and their point of concurrency. 


Term

Definition
A segment with endpoints being a vertex of a triangle and the midpoint of the the other side. 


Term

Definition
The point of concurrency of the medians of a triangle. 


Term

Definition
A segment from a vertex to the line containing the opposite side and perpendicular 


Term

Definition
The lines containing the altitudes of a triangle are concurrent, intersecting at the the orthocenter. 

