Naming Geometric Elements

What is the name of this ray?

This picture shows

• an acute angle

• a parallel line

• a right angle

• two line segments

This picture shows

• an angle

• a ray

• a line segment

• a line

This picture shows _____ that is _____

• an angle

• a line segment

• acute

• obtuse

• parallel

• G

• H

• I

• None

Name the vertex of the angle.

• E

• F

• D

• E, F, and D are vertices

Name the vertex of the angle.

• S

• R

• Q

• S, R, and Q are vertices

What is the correct definition of an angle? 

• one single ray
• two rays that meet at a single endpoint (vertex)
• two lines that never intersect
• two rays that go in opposite directions

This angle is written as......

•  ∠ABC
•  ∠ACB
• ∠BCA
• ∠CAB

What is the arrow pointing to in the angle?

• a ray

• geometry

• vertex

• line