Angles in a Polygon

What is the formula to calculate the sum of the exterior angles of any polygon?

• The sum of the exterior angles is always 180 degrees.

• The sum of the exterior angles is always 360 degrees.

• The sum of the exterior angles is equal to the number of sides multiplied by 180 degrees.

• The sum of the exterior angles is always 90 degrees.

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

• 360 degrees

• 540 degrees

• 720 degrees

• 180 degrees

What is the measure of each interior angle of a regular dodecagon?

• 120 degrees

• 135 degrees

• 150 degrees

• 160 degrees

How do you find the measure of each interior angle of a regular polygon?

• (n - 2) × 180 / n

• (n + 2) × 180 / n

• (n - 2) × 90 / n

• (n + 2) × 90 / n

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

• 720 degrees

• 800 degrees

• 900 degrees

• 1000 degrees

What is the measure of each interior angle of a regular hexagon?

• 90 degrees

• 120 degrees

• 135 degrees

• 108 degrees

How do you find a missing angle in a polygon?

• Add the known angles together and divide by the number of angles.

• Subtract the sum of the known angles from the total sum of the interior angles.

• Multiply the number of sides by 180 degrees.

• Use the exterior angle theorem to find the missing angle.

If one angle of a triangle is 50 degrees and another is 60 degrees, what is the measure of the third angle?

• 60 degrees

• 70 degrees

• 80 degrees

• 90 degrees

What is the sum of the interior angles of a polygon with n sides?

• (n - 2) × 180 degrees

• (n + 2) × 180 degrees

• n × 180 degrees

• (n - 1) × 180 degrees

If a quadrilateral has three angles measuring 90 degrees, what is the measure of the fourth angle?

• 90 degrees

• 180 degrees

• 270 degrees

• 360 degrees