Classifying Basic Angles

What equation could be used to solve for the missing angle measure?

• x + 19 = 180

• x + 19 = 19

• x + 19 = 60

• x + 19 = 90

What type of angle is this?

• Acute Angle

• Right Angle

• Obtuse Angle

• Straight Angle

What type of angle is this?

• Acute Angle

• Right Angle

• Obtuse Angle

• Straight Angle

What type of angle is this?

• Acute Angle

• Right Angle

• Obtuse Angle

• Straight Angle

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

• ∠D

• ∠f

• ∠FED

• ∠FDE

A straight angle is ...

• An angle that is exactly equal to 90 degrees

• An angle that is greater than 90 degrees but less than 180 degrees

• An angle that is less than 90 degrees

• An angle that is exactly equal to 180 degrees

Name the vertex of the angle.

• E

• F

• D

• E, F, and D are vertices

If m∠P = (19x – 24)° and x = 6, classify the angle.

• acute

• right

• obtuse

• straight

An angle whose measure is 90 degrees

• Right angle

• Acute angle

• Obtuse angle

• Backward angle

Angles can be ______ based on their measure

• eaten

• destroyed

• classified

• removed