Triangle Interior and Exterior Sum Theorem

The Triangle Sum Theorem states that the sum of all angles in a triangle is ______. 

• 45°

• 90°

• 180°

• 360°

Find the measure of the angle indicated. 

• 139°

• 66°

• 138°

• 116°

Find the measure of the missing angle.

• 90^o

• 10⁰

• 130^o

• 50^o

Solve for x.

• 16

• 11

• 50

• 6

Solve for x THEN find the degrees for angle A.

• 44^o

• 96^o

• -14^o

• 63^o

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

Find the measure of the indicated angle. 

• 26

• 36

• 85

• 144

Find the measure of the indicated angle. 

• 95

• 85

• 35

• 45

Which of the following angles can you add together to equal angle d? 

• Angle a and Angle b

• Angle b and Angle c

• Angle a and Angle c

• Angle a and Angle b and Angle c

Find the measure of the indicated angle. 

• 145

• 113

• 102

• 78