Acute Obtuse Right

Katerin's house has a room that is shaped like the figure here. What type of angles does the room have?

• acute

• right

• obtuse

Which type of angle is pictured?

• Acute

• Right

• Obtuse

• Straight

If all three angles are less than 90 degrees, it is a(an)

• obtuse triangle

• right triangle

• acute triangle

• scalene triangle

Which shape is not classified correctly?

• shape 4

• shape 5

• shape 7

• shape 8

This angle is:

• Smaller than a right angle

• A right angle

• Bigger than a right angle

What type of angle is this?

• right angle

• acute angle

• obtuse angle

Name the angles that appear to be acute (may pick more than one).

Determine the measure of the angle. Think: is it acute or obtuse?

• 135^o

• 130^o

• 50^o

• 45^o

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

c

b

a

right

obtuse

acute

This angle is:

• Smaller than a right angle

• A right angle

• Bigger than a right angle