Triangle Properties

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

• 90

• 270

• 360

• 180

If one of the interior angles of a triangle is 60 degrees, what are the measures of the other two angles?

• 90 degrees and 30 degrees

• 120 degrees and 120 degrees

• 45 degrees and 45 degrees

• Cannot be determined

What is the measure of each exterior angle of an equilateral triangle?

• 60 degrees

• 120 degrees

• 45 degrees

• 90 degrees

If one of the exterior angles of a triangle is 120 degrees, what are the measures of the other two exterior angles?

• 120 degrees

• 180 degrees

• 90 degrees

• 60 degrees

If the measure of one interior angle of a triangle is 45 degrees, what are the measures of the other two angles?

• 67.5 degrees

• 135 degrees

• 90 degrees

• 180 degrees

What is the sum of the measures of the exterior angles of any polygon?

• 45

• 90

• 180

• 360

If the measure of one exterior angle of a triangle is 30 degrees, what are the measures of the other two exterior angles?

• 90 degrees

• 120 degrees

• 60 degrees

• 165 degrees

If the measure of one interior angle of a triangle is 90 degrees, what are the measures of the other two angles?

• 30 degrees

• 45 degrees

• 75 degrees

• 60 degrees

What is the relationship between the measure of an exterior angle and the measures of the two remote interior angles?

• The measure of an exterior angle is equal to the difference of the measures of the two remote interior angles.

• The measure of an exterior angle is equal to the product of the measures of the two remote interior angles.

• The measure of an exterior angle is equal to the sum of the measures of the two remote interior angles.

• The measure of an exterior angle is equal to the average of the measures of the two remote interior angles.

If the measure of one interior angle of a triangle is 120 degrees, what are the measures of the other two angles?

• 30 degrees

• 90 degrees

• 180 degrees

• 60 degrees