# What is a 16-sided polygon called?

A sixteen-sided regular polygon is called a hexadecagon or a hexakaidecagon.

### What are the first eight polygons called?

A polygon with 3 sides is called triangle A polygon with 4 sides is called quadrilateral A polygon with 5 sides is called pentagon A polygon with 6 sides is called hexagon A polygon with 7 sides is called heptagon A polygon with 8 sides is called octagon

### What is the word for a nine sided polygon?

For a nine side polygon its called a nonagon. For a nine side polygon its called a nonagon. For a nine side polygon its called a nonagon.

### A polygon with an unknown number of sides is called what?

A polygon with an unknown number of sides is called a universal polygon.

### What is the name of a polygon with all sides length and angles the same is called a polygon?

That is called a regular polygon.

### What is a polygon with all sides the same length and all angles the same is called a polygon?

It is called a regular polygon.

### What is an equal lateral polygon called?

An equilateral polygon is one that has all sides the same length and is called a regular polygon.

### When a polygon does not have congruent sides it is called?

It is called an irregular polygon. However, an irregular polygon can have congruent sides if all angles are not equal.

### What are the names of polygon 100 and 1000 sides?

A 100-sided polygon is called a Hectagon. A 1000-sided polygon is called a Chiliagon.

### What is the nineteen sided polygon called?

A nineteen sided polygon is called a Nonadecagon or an Enneadecagon.

### What is the name for a 19 sided polygon called?

A 19 sided polygon is called an enneakaidecagon.

### What is A polygon with a unknown number of sides called?

It is simply called a polygon, or an "n-gon".

### What are the line segments that form a polygon called?

The line segments that form a polygon called are called sides or edges.

### What is a five-sided polygon?

A five-sided polygon is called a pentagon. A regular five-sided polygon is simply called a regular pentagon

### What is a polygon wih six sides called?

A hexagon. A polygon with 6 sides is called an hexagon.

### What is a 15-sided polygon called?

A 15-sided polygon is called a pentadecagon or a pentakaidecagon.

### The line segment that form a polygon are called its?

Line segments that form a polygon are called its sides.

### What is a 10-sided polygon called?

If you were wondering, a 10-sided polygon is called a decagon.

### What is 15 sided polygon is called?

A 15 sided polygon can be called either a pentadecagon or a quindecagon.

### Can a regular polygon be concave?

No. No! It is not possible. Regular polygon: Polygon in which all the sides are equal and all the interior angles are equal is called as a regular polygon. Concave polygon: A polygon that has one or more interior angles greater that 180o is called as a concave polygon. It is not possible to have polygon with all sides equal and greater than 180o. Source: www.icoachmath.com it is possible A concave polygon had to be… Read More

### What is a 638 sided polygon called?

The name of a polygon with 20 or more sides is called "n-gon".