Angle Relationships, Triangle Sum Theorem

Find the missing angle.  Find x.

• 20^o

• 70^o

• 160^o

• 180^o

Tags

CCSS.7.G.B.5

If m∠1 = 30°, then m∠3 = 

• 30°

• 60°

• 150°

• undetermined

Tags

CCSS.7.G.B.5

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

Solve for x

• 30°

• 40°

• 50°

• 60°

Tags

CCSS.8.G.A.5

The acute angles of a right triangle are

• supplementary

• linear

• complementary

• 60°

Tags

CCSS.8.G.A.5

The measure of each angle of an equiangular triangle is 

• complementary

• supplementary

• 60°

• 45°

Tags

CCSS.8.G.A.5

The measure of an exterior angle of a triangle is equal to the sum of the measures of its remote interior angles.
m∠4 = m∠1 + m∠2

• Triangle Sum Theorem

• Exterior Angle Theorem

• Third Angles Theorem

• Congruent Triangles Theorem

Tags

CCSS.8.G.A.5

Find the measure of angle A.

• 75^o

• 60^o

• 30^o

• 38^o

Tags

CCSS.7.G.B.5

Find the measure of the indicated angle. 

• 34°

• 46°

• 62°

• 36°

Tags

CCSS.8.G.A.5

Find the measure of the indicated angle. 

• 95°

• 85°

• 35°

• 45°

Tags

CCSS.8.G.A.5