Angle Sum of Polygons

What is the interior angle sum of a pentagon? (5-gon)

• 540 degrees

• 720 degrees

• 360 degrees

Answer explanation

Pentagon like THE Pentagon

What is the interior angle sum a hexagon? (6-gon)

• 540 degrees

• 720 degrees

• 900 degrees

Answer explanation

Hexagon like in a beehive!

What is the interior angle sum of a nonagon? (9-gon)

• 1260 degrees

• 360 degrees

• 900 degrees

What is the interior angle sum of a decagon? (10-gon)

• 900 degrees

• 180 degrees

• 1440 degrees

What is the interior angle sum of a 16-gon?

• 2520 degrees

• 3600 degrees

• 3000 degrees

Answer explanation

(16-2)*180=2520

What is the interior angle sum of an n-gon

• n degrees

• (n-2)*180 degrees

• n-2

What is the interior angle sum of a quadrilateral?

• 180 degrees

• 360 degrees

• 540 degrees

What is the interior angle sum of a 15-gon?

• 2340 degrees

• 2000 degrees

• 1920 degrees

Answer explanation

(15-2)*180=2340

What is the interior angle sum of a 22-gon?

• 3960 degrees

• 3600 degrees

• 3780 degrees

Answer explanation

(22-2)*180=3600

Solve for the missing angle

• 80 degrees

• 180 degrees

• 360 degrees

• 100 degrees

Answer explanation

The interior angle sum of a quadrilateral is 360 degrees so we see,

360-100-80-100=80