Regular Geometry - Lesson 8.1

A polygon with six sides is called a(n) ______________.

• hexagon
• pentagon
• decagon
• septagon

A polygon with seven sides is called a(n) ______________.

• hexagon
• pentagon
• heptagon

• septagon

A polygon with 5 sides is called a(n) _____________.

• pentagon
• hexagon
• septagon
• quadrilateral

A polygon with 9 sides is called a(n) _____________.

• pentagon
• hexagon
• heptagon

• nonagon

A polygon with 8 sides is called a(n) __________________.

• octagon
• decagon
• heptagon
• dodecagon

The sum of the interior angles of a polygon is __________________ where n is the number of sides.

• (n - 2)180
• (n - 1)180
• 360
• (n - 3)(180)

The sum of the exterior angles of a polygon is __________________ where n is the number of sides.

• 360
• n
• (n - 2)180
• (n - 1)180

Find the sum of the interior angles of a nonagon.

• 1260
• 900
• 1620
• 180

Find the sum of the interior angles of a triangle.

• can not be determined

• 540

• 360

• 180

Find the sum of the interior angles of a pentagon.

• 900

• 540

• 360

• 180