Sum Theorem of Triangle

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

• 45°

• 90°

• 180°

• 360°

Tags

CCSS.8.G.A.5

Find the measure of each angle indicated.

• 62

• 53

• 71

• 50

Find the measure of each angle indicated.

• 50

• 55

• 60

• 70

Tags

CCSS.8.G.A.5

Find the measure of the indicated angle. 

• 95

• 85

• 35

• 45

Tags

CCSS.8.G.A.5

Use the Triangle Sum Theorem to write an equation to solve for x.

• 70 + 60 + (8x+2)

• 70 + 60 = (8x+2)

• 70 + 60 + (8x+2) = 360

• 70 + 60 + (8x+2) = 180

Tags

CCSS.8.G.A.5

Find the measure of angle A.
Use the Triangle Sum Theorem to write your equation, then solve for x.

• 44^o

• 96^o

• -14^o

• 63^o

Tags

CCSS.8.G.A.5

Use the Triangle Sum Theorem to write an equation to solve for x.

• 70 + 65 + (x+53)

• 70 + 65 + (x+53) = 180

• 70 + 65 = (x+53)

• 70 + 65 + (x+53) = 360

Tags

CCSS.8.G.A.5

Use the Triangle Sum Theorem to find the measure of  angle C in degrees.

• 59°

• 99°

• 41°

• 54°

Tags

CCSS.8.G.A.5

• A) 80°

• B) 90°

• C) 180°

• D) 260°

Tags

CCSS.8.G.A.5

Use the Triangle Sum Theorem to find the measure of  angle B in degrees.

•  95°

•  81°

•  91°

•  121°

Tags

CCSS.8.G.A.5