Triangle Angle Sum Theorem

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

• 45°
• 90°
• 180°
• 360°

What is the third angle of a triangle whose 1st angle is 34 and 2nd angle is 101?

• 32
• 39
• 45
• 54

Solve for x.

• 16
• 11
• 50
• 6

Find the measure of the missing angle.

• 90^o
• 10⁰
• 130^o
• 50^o

Find the measure of the indicated angle. 

• 34
• 46
• 62
• 36

Solve for the missing angle with the question mark. 

• A
• B
• C
• D

What is the measure of angle b?

• 36^o
• 56^o
• 63^o
• 117^o

Find the measure of the missing angles.

• A

• B

• C

• D

Angles that are exactly 90 degrees are called _____ ______.

• tight angles
• acute angles
• obtuse angles
• right angles

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

• 45°
• 90°
• 180°
• 360°