17 terms

# Geometry Pre-AP Ch. 1 Vocab.

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segment
a part of a line consisting of two points and all points in between them
endpoint
a point at one end of a segment or the starting point of a ray.
ray
a part of a line that starts at an endpoint and extends forever in one direction
opposite rays
two rays that have a common endpoint and form a line
postulate
or axiom; a statement that is accepted without proof.
coordinate
a point that corresponds to one and only one number on the ruler
distance
the absolute value of the difference of the coordinates
length
distance between A and B
congruent statements
segments that have the same length
construction
a way of creating a figure that is more precise
midpoint
the point that bisects the segment into two congruent statements
bisect
divide evenly
segment bisector
any ray, segment, or line that intersects a segment at its midpoint
angle
a figure formed by two rays, or sides, with a common endpoint called the vertex
vertex
a common endpoint
interior of an angle
the set of all points between the sides of the angle
exterior of an angle
the set of all points outside the angle