# Geometry Pre-AP Ch. 1 Vocab.

### 17 terms by AllisonESmith

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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

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

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