# Geometry Honors Chapter 1

### 26 terms by dsmath

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Chapter 1 Vocabulary

### equidistant

equal or same distance

### point

simplest term in geometry
distinct spot of identification

### line

infinite number of points. Continues indefinitely in both directions

### plane

extends without ending and has no thickness

### collinear

points on the same line

### coplanar

points on the same plane

### intersection

two lines, rays, segments that meet or cross

### noncollinear points

points not on the same line

### segment

two points on the line and all the points between them. The two points are called the endpoints

### ray

has one endpoint and continues to infinity in one direction

### postulate

statement accepted as true

### angle

formed by intersection of two rays

### opposite rays

rays sharing a common endpoint but going in opposite directions

### congruent

of equal or same measure

### midpoint of a segment

a point which divides a segment in two equal smaller segments

### bisector of a segment

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

### sides of an angle

the two rays which make up the angle

### vertex

point at which two rays meet to form an angle.

### acute angle

measure between 0 and 90

### right angle

measures 90 degrees exactly

### obtuse angle

measures between 90 and 180 degrees

### straight angle

measures 180 degrees exactly. A straight line is a straight angle

### protractor

measures the size of an angle

### congruent angles

angles that have the same measure

angles with a common side and common vertex

### bisector of an angle

is the ray that divides the angle into two congruent adjacent angles

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