Complementary and Supplementary and Triangle Sum Theorem

The sum of the angle measures of a triangle is 180° 
m∠A + m∠B + m∠C = 180°

• Triangle Sum Theorem

• Exterior Angle Theorem

• Third Angle Theorem

• Centroid Theorem

Tags

CCSS.8.G.A.5

The acute angles of a right triangle are

• supplementary

• linear

• complementary

• 60°

Tags

CCSS.8.G.A.5

Solve for x

• 30°

• 40°

• 50°

• 60°

Tags

CCSS.8.G.A.5

Find the measure of the indicated angle. 

• 34°

• 46°

• 62°

• 36°

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

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

Tell whether the angles are complementary or supplementary. Then find the value of x.

• Complementary; x= 9°

• Complementary; x = 20°

• Supplementary; x = 20°

• Supplementary; x = 9°

Tags

CCSS.7.G.B.5

Tags

6.8A

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 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