1.3 Measuring Angles

Right, acute, or obtuse?

• Acute
• Right
• Obtuse

Right, acute, or obtuse?

• Right
• Acute
• Obtuse

Which type of angle is pictured?

• Acute
• Right
• Obtuse
• Straight

Which is the vertex of the angle?

• X

• Y

• Z

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

What does this represent?

• angle ABC
• triangle ABC
• arc ABC
• line ABC

Which term best describes the figure?

• Ray RST

• Line segment RST

• Angle RST

• Point RST

Which names a straight angle in the figure above?

• Angle ABC

• Angle EBF

• Angle CBF

• Angle ABF