Triangle Sum Theorem

What is the sum of the interior angles of a triangle?

• 180

• 360

• 270

• 90

Tags

CCSS.8.G.A.5

If one angle of a triangle measures 60 degrees and another angle measures 80 degrees, what is the measure of the third angle?

• 40

• 90

• 120

• 20

Tags

CCSS.8.G.A.5

If the measure of one angle of a triangle is 45 degrees and the measure of another angle is 75 degrees, what is the measure of the third angle?

• 120

• 90

• 30

• 60

Tags

CCSS.8.G.A.5

If the measure of one angle of a triangle is 90 degrees and the measure of another angle is 45 degrees, what is the measure of the third angle?

• 45

• 180

• 135

• 90

Tags

CCSS.8.G.A.5

If the measure of one angle of a triangle is 120 degrees and the measure of another angle is 30 degrees, what is the measure of the third angle?

• 90

• 60

• 30

• 120

Tags

CCSS.8.G.A.5

If the measure of one angle of a triangle is 60 degrees and the measure of another angle is 30 degrees, what is the measure of the third angle?

• 45

• 90

• 120

• 180

Tags

CCSS.8.G.A.5

If the measure of one angle of a triangle is 90 degrees and the measure of another angle is 60 degrees, what is the measure of the third angle?

• 75

• 45

• 120

• 30

Tags

CCSS.8.G.A.5

If the measure of one angle of a triangle is 45 degrees and the measure of another angle is 45 degrees, what is the measure of the third angle?

• 90

• 0

• 180

• 45

Tags

CCSS.8.G.A.5

If the measure of one angle of a triangle is 60 degrees and the measure of another angle is 60 degrees, what is the measure of the third angle?

• 90

• 30

• 60

• 120

Tags

CCSS.8.G.A.5

If the measure of one angle of a triangle is 90 degrees and the measure of another angle is 90 degrees, what is the measure of the third angle?

• 0

• 45

• 360

• 180

Tags

CCSS.8.G.A.5