Term

Definition
Through any two points there exists exactly one line. 


Term

Definition
A line contains at least two points. 


Term

Definition
If two lines intersect, then their intersection is exactly one point. 


Term

Definition
A statement that can be proved easily by a theorem or postulate. 


Term

Definition
To divide into two congruent parts. 


Term

Definition
If two lines are parallel to the same line, then they're parallel to the each other. 


Term

Definition
A proof in paragraph form. 


Term

Definition
Part of a line with endpoints and all points between the two endpoints. 


Term

Definition
Part of a line with endpoints and all points between the two endpoints. 


Term

Definition
The negative of a statement 


Term

Definition
An unproven statement based on observations. 


Term

Definition
An example that proves a statement false. 


Term

Definition
The formula that tells the distance between two points. 


Term

Definition
The starting point in a raw which all points on the line extend from. 


Term

Definition
Uses known words to describe a new word. 


Term

Definition
A point has no dimension and is represented by a small dot. 


Term

Definition
A line extends in one dimension. 


Term

Definition
a plane extends in two dimensions. 


Term

Definition
points that lie on the same line. 


Term

Definition
points which lie on the same plane. 


Term

Definition
to have one or more points in common 


Term

Definition
the set of points that two or more geometric figures have in common. 


Term
Segment addition postulate 

Definition
If B is between AC, then AB + BC = AC 


Term

Definition
Segments with the same length. 


Term

Definition
Consists of two different rays that have the same initial point. 


Term

Definition
Two rays which make up the angle 


Term

Definition
The initial point of the two rays which make up the angle 


Term

Definition
Angles with the same measure 


Term

Definition
all points between the points that lie on each side of the angle 


Term

Definition
All points not in the interior 


Term

Definition
An able with a measure between 0 and 90 


Term

Definition
An angle with the measure of 90 


Term

Definition
An angle with a measure between 90 and 180 


Term

Definition
An angle with a measure of 180 


Term

Definition
Two angles with a common vertex and side but no interior points. 


Term

Definition
The point that divides or bisects a segment into two congruent segments 


Term

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


Term

Definition
A construction tool used to draw segments. 


Term

Definition
A geometric drawing that uses a limited set of tools, usually a compass and straightedge. 


Term

Definition
the formula used to determine the midpoint 


Term

Definition
two angles whose sides form two pairs of opposite rays 


Term

Definition
two adjacent angles whose sides form two pairs of opposite rays. 


Term

Definition


Term

Definition
The sum of an angle and it's complement is 90 


Term

Definition
Two angels whose measure add up to 180 


Term

Definition
An angle and its supplement add up to 180 


Term

Definition
A triangle with three congruent sides 


Term

Definition
a triangle with at least two congruent sides 


Term

Definition
a triangle with no congruent sides 


Term

Definition
a triangle with three congruent angles 


Term

Definition
a triangle with one right angle 


Term

Definition
a triangle with three acute angles 


Term

Definition
a triangle with one obtuse angle 


Term

Definition
each of the three points joining the sides of a triangle 


Term
adjacent sides of a triangle 

Definition
two sides of a triangle with a common vertex 


Term

Definition
in a right triangle, the side opposite the right triangle 


Term

Definition
the sum of the measures of the interior angles of a triangle is 180 


Term
corollary to the triangle sum theorem 

Definition
the acute angles of a right triangle are complementary 


Term
Reflexive property of equality 

Definition


Term
Symmetric property of equality 

Definition


Term
Transitive property of equality 

Definition


Term
reflexive property of congruence 

Definition


Term
symmetric property of congruence 

Definition


Term
transitive property of congruence 

Definition


Term
reflexive property of angle congruence 

Definition


Term
symmetric property of angle congruence 

Definition


Term
transitive property of angle congruence 

Definition


Term
reflexive property of triangle congruence 

Definition


Term
symmetric property of triangle congruence 

Definition


Term
transitive property of triangle congruence 

Definition


Term

Definition
a rule accepted without proof 


Term

Definition
a rule accepted without proof 


Term

Definition
if two sides of a triangle are congruent, then the angles opposite them are congruent 


Term
converse of base angles theorem 

Definition
if two angles of a triangle are congruent, then the sides opposite them are congruent 


Term

Definition
if a triangle is equilateral, it is also equiangular 


Term

Definition
if a triangle is equiangular, then it is also equilateral 


Term

Definition


Term

Definition


Term
right angles congruence theorem 

Definition
all right angles are congruent 


Term

Definition
if two angles form a linear pair then are are supplementary 


Term

Definition
vertical angles are congruent 


Term

Definition


Term

Definition
a line that intersects two or more coplanar lines at diff. points 


Term

Definition


Term

Definition


Term

Definition
two figures with the exact same size and shape 


Term

Definition


Term

Definition


Term

Definition
the initial point of the two rays 


Term

Definition
the distance between two points on a segment 


Term

Definition
the angles which make up the base of an isosceles triangle 


Term

Definition
if three sides of one triangle are congruent to three sides of a second triangle, then the two triangles are congruent. 


Term

Definition
if two sides and the included angle of one triangle are congruent to two sides and the included angle of a second triangle, then the two triangles are congruent. 


Term

Definition
If two angles and the included side of one triangle are congruent to two sides and the included side of a second triangle, the two triangles are congruent. 


Term

Definition
If two angles and a nonincluded side of one triangle are congruent to two angles and the corresponding nonincluded side of a second triangle, then the two triangles are congruent. 

