# An equilateral triangle is an example of what kind of polygon? Convex, concave or irregular?

##### 1 Answer

Dec 26, 2015

*Equilateral triangle* is a *regular* three-sided polygon.

It has three interior angles of

It's an example of a *convex* polygon.

#### Explanation:

There are a few different but equivalent definitions of a *convex* polygon.

One of them is as follows.

A polygon is called *convex* if all its interior angles are less than

Another definition is as follows.

A polygon is called *convex* if a segment that connects any two of its vertices lies within the boundaries of a polygon. Equilateral triangle, obviously, satisfies this definition.