1. Geometry Vocabulary
Chapter 1.1

2. Geometry Vocabulary Term Definition Picture Chp 1.1 Point Line Plane
Has no dimension. Dot represents a point
Has ONE dimension. Shown by a line with two arrow heads and has no end.
Through any two points, there is exactly ONE line
Line
Has TWO dimensions. Shown by a shape that looks like a floor or wall but extends without end.
Through any 3 points not on the same line, there is exactly ONE plane
Plane

4. Geometry Vocabulary Term Definition Picture Chp 1.1 Collinear points
Points that lie on the same line
Coplanar points
Points that lie on the same plane
Line segment AB consists of endpoints A and B and all points between A and B. It can also be called line segment BA
Line segment
Ray AB consists of endpoint A and all points that lie on the same side as B (going on forever). Ray AB is NOT the same as ray BA
Ray

5. Warm up – please add these to your vocabulary chart from yesterday
Chp 1.1
Geometry Vocabulary
Term
Definition
Picture
If point C lies on AB between points A and B, Then CA and CB are opposite rays
Opposite rays
Intersection
The intersection of geometric figures consists of all the points they have in common.
Warm up – please add these to your vocabulary chart from yesterday