Geometry Undefined Terms

A ________ is a flat surface.

• Point

• Line

• Line segment

• Plane

Points P and Q lie in plane A.  How many lines contain P and Q?

• Line PQ

• Lines PQ and QP

• The 2 lines PQ and QP plus another line that does not lie in plane A.

Name two planes that contain line QP.

• Planes PSR, QNM

• Planes SPL, QRM

• Planes NML, QPR

• Planes PRQ, SLP

Points X and Y line in both plane P and plane Q. What object defines that intersection of the two planes?

• Line XY

• Segment XY

• Plane P

• All of 3-dimensional space

How many point are required to name a specific plane

• 3

• 2

• 1

• 0

If a plane and a line intersect, their intersection will be a ________.

• Point

• Line

• Plane

• Segment

Name a point that is coplanar with line DF but not collinear

• G

• H

• E

Opposite rays are rays that share an endpoint and point in opposite directions. Both rays together form a(n) __________.

• Line

• Plane

• Intersection point

• Acute angle

What are the three undefined terms?

• Points, lines, and rays

• Planes, lines, and segments

• Rays, segments, and planes

• Points, lines, and planes

Two points are collinear if and only if

• They lie on the same plane

• They lie on the same set of parallel lines

• They lie on the same angle

• They lie on the same line