Triangle Angles

Calculate the measure of the third angle in a triangle with angles measuring 45° and 60°.

• 100°

• 90°

• 75°

• 30°

Tags

CCSS.8.G.A.5

If one angle in a triangle measures 80° and the second angle measures 45°, what is the measure of the third angle?

• The measure of the third angle is 90°.

• The measure of the third angle is 100°.

• The measure of the third angle is 30°.

• The measure of the third angle is 55°.

Tags

CCSS.8.G.A.5

Find the value of x in the triangle where the angles are 3x, 4x, and 5x.

• 10

• 8

• 15

• 12

Tags

CCSS.8.G.A.5

In a triangle, if one angle measures 60° and the second angle measures 70°, what is the measure of the third angle?

• The measure of the third angle is 80°.

• The measure of the third angle is 50°.

• The measure of the third angle is 100°.

• The measure of the third angle is 90°.

Tags

CCSS.8.G.A.5

If the measure of one angle in a triangle is 90° and the second angle measures 45°, what is the measure of the third angle?

• 60°

• 180°

• 30°

• 45°

Tags

CCSS.8.G.A.5

Calculate the measure of the third angle in a triangle with angles measuring 30° and 60°.

• 90°

• 120°

• 45°

• 180°

Tags

CCSS.8.G.A.5

Find the value of x in the triangle where the angles are 2x, 3x, and 5x.

• 10

• 12

• 15

• 8

Tags

CCSS.8.G.A.5

In a triangle, if one angle measures 50° and the second angle measures 80°, what is the measure of the third angle?

• 120°

• 90°

• 50°

• 30°

Tags

CCSS.8.G.A.5

If the measure of one angle in a triangle is 100° and the second angle measures 30°, what is the measure of the third angle?

• 120°

• 50°

• 80°

• 40°

Tags

CCSS.8.G.A.5

Find the value of x in the triangle where the angles are 4x, 5x, and 6x.

• 10

• 12

• 15

• 20

Tags

CCSS.8.G.A.5