Mastering Exterior Angles: Solve for Unknown Angles

A triangle has one exterior angle measuring 120 degrees. If one of the interior angles is 50 degrees, what is the measure of the other interior angle?

• 90 degrees

• 70 degrees

• 60 degrees

• 80 degrees

Tags

CCSS.8.G.A.5

In a triangle, one exterior angle measures 135 degrees. If the two remote interior angles are equal, what is the measure of each interior angle?

• 45 degrees

• 90 degrees

• 67.5 degrees

• 120 degrees

Tags

CCSS.8.G.A.5

A park is designed in the shape of a triangle. One exterior angle at a corner of the park is 110 degrees. If one of the interior angles is 40 degrees, what is the measure of the third interior angle?

• 90 degrees

• 60 degrees

• 70 degrees

• 80 degrees

Tags

CCSS.8.G.A.5

During a construction project, an architect finds that one exterior angle of a triangular building design is 150 degrees. If one of the interior angles is 70 degrees, what is the measure of the other interior angle?

• 80 degrees

• 100 degrees

• 90 degrees

• 60 degrees

Tags

CCSS.8.G.A.5

A triangular garden has an exterior angle of 100 degrees. If one of the interior angles is 30 degrees, what is the measure of the remaining interior angle?

• 90 degrees

• 80 degrees

• 70 degrees

• 60 degrees

Tags

CCSS.8.G.A.5

In a triangle, the exterior angle is 180 degrees minus the smallest interior angle, which is 30 degrees. What is the measure of the exterior angle?

• 120 degrees

• 150 degrees

• 180 degrees

• 90 degrees

Tags

CCSS.8.G.A.5

A triangular sign has an exterior angle of 160 degrees. If one of the interior angles is 50 degrees, what is the measure of the other interior angle?

• 130 degrees

• 140 degrees

• 110 degrees

• 90 degrees

Tags

CCSS.8.G.A.5

A sports field is triangular in shape. One exterior angle measures 140 degrees. If one of the interior angles is 60 degrees, what is the measure of the other interior angle?

• 100 degrees

• 80 degrees

• 70 degrees

• 90 degrees

Tags

CCSS.8.G.A.5

In a triangle, the exterior angle is 90 degrees. If one of the interior angles is 45 degrees, what is the measure of the other interior angle?

• 90 degrees

• 30 degrees

• 60 degrees

• 75 degrees

Tags

CCSS.8.G.A.5

A triangular piece of land has an exterior angle of 130 degrees. If one of the interior angles is 50 degrees, what is the measure of the remaining interior angle?

• 70 degrees

• 80 degrees

• 100 degrees

• 90 degrees

Tags

CCSS.8.G.A.5