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Statement
Words and symbols that make a claim that is either true or false
Complementary angles
Two angles with a sum of 90. Each angle in the pair is known as the complement of the other angle.
Supplementary Angle
Two angles are (. ) if the sum of their measures is 180.
Vertical angles
nonadjacent angles that are formed by 2 intersecting lines
Bisector of an angle
the ray that separates the given angle into two congruent angles
Congruent angles
two angles with the same measure
Adjacent angles
Two angles are (. ) if they have a common vertex and a common side between them
Angle
the union of two rays with a common endpoint
Parallel lines
lines that lie in the same plane but do not intersect
Ray
(. ) AB is the union of line segment AB and all points X on AB such that B is between A and X
Midpoint
the point that separates the line segment into two congruent parts
Congruent line segments
two line segments that have the same length
Distance
The (. )between two points A snd B is the length of the line segment AB that joins the two points
Postulate
a statement that is assumed to be true
Line segment
the subset of a line that contains two points known as endponts and all the points between them.
Scalene triangle
a triangle in which no two sides are congruent
Isosceles triangle
a triangle that has two congruent sides
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