Naming Angles

Define Obtuse Angle

• Less than 90

• Exactly 90

• Greater than 90 and less than 180

• Exactly 180

Define Acute Angle

• Less than 90

• Exactly 90

• Greater than 90 and less than 180

• Exactly 180

Define Right Angle

• Less than 90
• Exactly 90
• Greater than 90 and less than 180
• Exactly 180

Define Straight Angle

• Less than 90

• Exactly 90

• Greater than 90 and less than 180

• Exactly 180

Right, acute, or obtuse?

• Acute
• Right
• Obtuse

Right, acute, or obtuse?

• Right
• Acute
• Obtuse

_{What is the measure of the following angle?}  

• 10 degrees.
• 40 degrees.
• 67 degrees.
• 168 degrees. 

_{What is the measure of the angle?}

• 110 degrees. 
• 140 degrees.
• 150 degrees.
• 170 degrees. 

What is the measurement of a right angle?

• 70
• 80
• 90
• 180

What is the measurement of a straight angle?

• 100
• 180
• 360
• 240