Naming and Classifying Angles

Right, acute, or obtuse?

• Acute

• Right

• Obtuse

Name the angle form by lines DE and EF in the long form.

• ∠D

• ∠f

• ∠FED

• ∠FDE

Name the angle form by lines KL and ML in the long form.

• ∠LMK

• ∠KML

• ∠KLM

Classify this angle.

• Acute angle

• Right angle

• Complementary angles

• Obtuse angle

What type of angle is pictured?

• acute

• right

• obtuse

• straight

What is the correct name for this angle?

What is the measurement of a right angle?

• 70

• 80

• 90

• 180

What is the measurement of a straight angle?

• 100

• 180

• 360

• 240

This angle is written as......

•  ∠ABC

•  ∠ACB

• ∠BCA

• ∠CAB