Big Ideas Geometry Basics of Geometry

What is part of a line that goes forever in just one direction?

• line

• line segment

• ray

• plane

What are lines that intersect to make a right angle?

• perpendicular

• complementary

• intersecting

• parallel

Part of a line consisting of two endpoints is a

• ray

• plane

• half line

• segment

A set of points that all lie on the same line are 

• collinear

• coplanar

• ray

• segment

Name the plane.

• Plane DEA

• Plane j

• Plane CDF

• Plane F

What is the name of this ray?

• Ray AB

• Ray BA

• Ray B

• Ray A

Name three coplanar points.

• D, E, B

• C, B, A

• M, E, C

• A, F, E

Two angles whose measures have the sum 180°

• Complementary angles

• Supplementary angles

• Obtuse angle

• Straight angle

Two angles whose measures have the sum 90°

• Complementary angles

• Right angle

• Supplementary angles

• Perpendicular

Angles that have the same measure

• Complementary angles

• Supplementary angles

• Adjacent angles

• Congruent angles