What is the sum of interior angles for a nonagon

The video tutorial explains how to find the sum of interior angles in polygons by dividing them into triangles. It introduces the formula (n-2) * 180 degrees, where n is the number of sides. The tutorial then identifies the number of sides for various polygons, focusing on a nonagon, and calculates its interior angle sum.

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

• 360 degrees

• 180 degrees

• 270 degrees

• 90 degrees

Which formula is used to calculate the sum of interior angles of a polygon?

• (n+2) * 180 degrees

• (n-1) * 180 degrees

• (n-2) * 180 degrees

• (n*2) * 180 degrees

How many sides does a hexagon have?

• 5

• 6

• 7

• 8

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

• 1620 degrees

• 1440 degrees

• 1080 degrees

• 1260 degrees

If a polygon has 8 sides, what is it called?

• Decagon

• Heptagon

• Nonagon

• Octagon