# How can we name a polygon?

##### 1 Answer

In most cases a polygon is named based on the number of its sides (angles, vertices) and/or properties of these elements.

See below.

#### Explanation:

*Triangle*: a polygon with three sides (and three angles, three vertices).

*Rectangle*: a polygon with all right angles

*Hexagon*: a polygon with six sides (and six angles, six vertices)

*Octagon*: a polygon with eight sides (and eight angles, eight vertices)

Sometimes, a characteristic of a polygon is so important that it alone classifies the polygon.

*Parallelogram* - a polygon with four sides with opposite side parallel to each other;

*Square* - a regular polygon with four equal sides and four equal angles .

*Rhombus* - a polygon with four equal sides.

Sometimes, both the number of sides and some property are present in a name.

*Isosceles triangle* - a triangle with two sides equal to each other in length.

*Regular pentagon* - a five-sided polygon with all sides and all interior angles equal to each other.