Acute, Obtuse, Right Angle

What kind of angle is this?

• right angle

• obtuse angle

• acute angle

• reflex angle

How many acute angles are in an acute triangle?

• 0

• 1

• 2

• 3

Which angle has exactly 90 degrees?

• acute angle

• right angle

• obtuse angle

• reflex angle

Which angle has less than 90 degrees?

• acute angle

• right angle

• obtuse angle

• reflex angle

What type of angle measures exactly 90 degrees?

• Acute angle

• Obtuse angle

• Right angle

• Straight angle

Right, acute, or obtuse?

• Acute

• Right

• Obtuse

Determine if the angle is acute, obtuse, or right

75º

• acute

• obtuse

• right

Which of the following is an example of an acute angle?

• An angle of 85 degrees

• An angle of 95 degrees

• An angle of 100 degrees

• An angle of 180 degrees

Which of the following is an example of an obtuse angle?

• An angle that is exactly 90 degrees

• An angle less than 90 degrees

• An angle more than 90 degrees but less than 180 degrees

• An angle more than 180 degrees

Label the angles M, O, and L in the figure.

c

b

a

acute

obtuse

right