Identify Polygons

Identify this polygon.

• octagon

• heptagon

• nonagon

• decagon

What is a polygon?

• A solid figure with 3 or more closed, straight sides that do not cross over.

• A plane figure with 3 or more closed, curved sides that do not cross over.

• A plane figure with 3 or more closed, straight sides that do not cross over.

• A plane figure with 3 or more closed, straight sides that cross over.

What is the name of a polygon with 9 angles?

• novagon

• decagon

• heptagon

• nonagon

This polygon is a(n) ​ (a)   .

• heptagon

• octagon

• nonagon

• pentagon

Answer explanation

A ​ (a)   is a six-sided polygon.

• hexagon

• heptagon

• nonagon

• decagon

Is this a polygon?

• Yes

• No

Is this a polygon?

• Yes

• No

A ​ (a)   is a five-sided polygon.

• pentagon

• hexagon

• heptagon

• octagon

Answer explanation

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

• pentagon

• hexagon

• septagon

• quadrilateral

A ​ (a)   is a six-sided polygon.

• hexagon

• heptagon

• nonagon

• decagon