4.6C Classify Angles

Which could be the measurement of

an acute angle?

• 45°

• 94°

• 101°

• 140°

What type of angle classifies the

triangle?

• obtuse

• acute

• right

• none of these

Which of the following shapes has two

acute angles and two obtuse angles?

*Hint: Draw these shapes on notebook paper and make a T chart*

• 
• 
• 
• 

Which of the following triangles

appears to be an acute triangle?

• 
• 
• 
• 

How many triangles in the set

are right triangles?

• 1

• 2

• 3

• 4

What kind of angle is ABC?

• Straight

• Right

• Obtuse

• Acute

Which name best describes the

triangle?

• Right triangle

• Acute triangle

• Obtuse triangle

• Not here

Which triangle appears to be an acute

triangle?

• 
• 
• 
• 

Which of the following accurately

describes the triangle?

*Hint: Look CAREFULLY at each vertex!*

• It is a right triangle because it has one angle that measures 90 degrees.

• It is an equilateral triangle because all angles measure the same.

• It is an obtuse triangle because it has one angle greater than 90 degrees.

• It is an acute triangle because all angles are less than 90 degrees.

What kind of triangle has one angle greater than 90 degrees?

• acute

• equilateral

• right

• obtuse