Rays, Line Segments, Lines, Points, Planes

Part of a line. Has one endpoint and continues on forever in one direction.

• Line Segment

• Line

• Ray

• Point

What does the image show? 

• a ray

• a line

• a line segment

• a point

What is the difference between a LINE SEGMENT and a LINE?

• Line Segments are two-dimensional, Lines are one-dimensional

• Lines can be represented on single planes; Line Segments can only be represented on multiple planes.

• Line Segments have finite lengths; Lines go on forever.

• Line segments are geometric figures; Lines are not.

Which terms are considered undefined terms in Euclidean geometry?

• Point, plane, line segment

• Point, line, plane

• Line, plane, angle

• Point, line, ray

An example of coplaner points

• D, E, B

• C, B, A

• M, E, C

• A, F, E

Give another name for line b

• line a

• R

• line KL

• line HK

How would you describe points I, L, C?

• collinear

• non-coplanar

• symmetric

• coplanar

Name the intersection of planes P & R. Give the best answer.

• Point D

• Point A

• Line AB

• Line FG

Name a point non-coplanar to Plane R

• Point K

• Point M

• Point R

• Point H

Name the intersection of Line c and Plane R

• Point J

• Line HK

• Point K

• Line MN