# Geometry Chapter 1

## 18 terms

### point

location in space that has no dimension

### line

infinite set of points with one dimension

### plane

infinite set of points with two dimensions

### space

set of all points that has three dimensions

### collinear points

points on the same line

### noncollinear points

points where you cannot draw a line to contain them all

### coplanar points

points on the same plane

### noncoplanar points

points which cannot be contained in one plane

### coplanar lines

lines on the same plane

### noncoplanar lines/skew lines

lines not on the same plane

### intersection

set of points which two figures share

### line segment

finite piece of a line

### ruler postulate

the length of a line segment equals the difference of its number line coordinates

### congruent

line segments are segments with equal length

### midpoint

point on a line segment which divides it into two congruent smaller segments

### bisector

any figure which intersects a line segment at its midpoint