Angles of Triangles

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

• 45°
• 90°
• 180°
• 360°

Find the measure of the missing angle.

• 30^o
• 110^o
• 150^o
• 40^o

Find the measure of the missing angle.

• 90^o
• 10⁰
• 130^o
• 50^o

Which of the following terms best describes Angle d? (remember that it's outside)

• Remote interior angle
• Corresponding angle
• Exterior angle
• Interior angle

Find the value of x by using the exterior angle theorem.

• A
• B
• C
• D

Find the measure of the indicated angle. 

• 145
• 113
• 102
• 78

Find <S

• A

• B

• C

• D

What is the value of the missing angle?

• 105

• 80

• 55

• 25

Solve for x

• 60

• 120

• 40

• 65

• A

• B

• C

• D