Classifying Triangles Angles

Classify this triangle by its angles.

• Acute

• Scalene

• Equilateral

• Equiangular

Find the measure of the indicated angle. 

• 26

• 36

• 85

• 144

Find the missing angle.

• 29° 

• 39° 

• 49° 

• 59° 

A triangle has angle measurements of 26°, 59°, and 95°. What kind of triangle is it?

• acute triangle

• right triangle

• obtuse triangle

• none of the above

Which type of triangle is pictured?

• Equilateral Triangle

• Right Isosceles Triangle

• Obtuse Scalene Triangle

• Obtuse Equilateral Triangle

If all three angles are exactly the same measure, how big is each angle?
Hint:    x + x + x  = 180

• 180 degrees

• 90 degrees

• 50 degrees

• 60 degrees

Solve for x.

• 16

• 11

• 50

• 6

What is the value of the missing angle?

• 90

• 100

• 20

• 120

Classify the triangle by its sides and angles.

• acute isosceles

• right isosceles

• obtuse isosceles

• obtuse scalene

Classify the triangle by its sides and angles.

• acute scalene

• right scalene

• obtuse scalene

• right isosceles