- What is a polygon and how many sides does it have?
- What is not a regular polygon?
- What is a 100 sided shape called?
- What’s a 6 sided shape called?
- What does a regular polygon look like?
- How many angles does a polygon have?
- Why is a cross not a regular polygon?
- What are the 12 kinds of polygons?
- How many degrees is a 6 sided shape?
- What is the formula for interior angles?
- What is a 9 sided shape called?

## What is a polygon and how many sides does it have?

A polygon is a plane (2D) shape with straight sides….2D Shapes.Triangle – 3 SidesSquare – 4 SidesPentagon – 5 SidesHexagon – 6 sidesHeptagon – 7 SidesOctagon – 8 SidesNonagon – 9 SidesDecagon – 10 SidesMore ….

## What is not a regular polygon?

An irregular polygon is any polygon that is not a regular polygon. It can have sides of any length and each interior angle can be any measure. They can be convex or concave, but all concave polygons are irregular since the interior angles cannot all be the same.

## What is a 100 sided shape called?

hectogonIn geometry, a hectogon or hecatontagon or 100-gon is a hundred-sided polygon. The sum of all hectogon’s interior angles are 17640 degrees.

## What’s a 6 sided shape called?

hexagonA five-sided shape is called a pentagon. A six-sided shape is a hexagon, a seven-sided shape a heptagon, while an octagon has eight sides…

## What does a regular polygon look like?

In Euclidean geometry, a regular polygon is a polygon that is equiangular (all angles are equal in measure) and equilateral (all sides have the same length). Regular polygons may be either convex or star.

## How many angles does a polygon have?

The General RuleShapeSidesSum of Interior AnglesTriangle3180°Quadrilateral4360°Pentagon5540°Hexagon6720°6 more rows

## Why is a cross not a regular polygon?

For a polygon to be ‘regular’ it must have all sides the same length and all interior angles the same. The figure above is actually an example of an equilateral polygon since it has all sides the same length, but it is not a regular polygon because its interior angles are not all the same.

## What are the 12 kinds of polygons?

Names of PolygonsNameSidesInterior AngleNonagon (or Enneagon)9140°Decagon10144°Hendecagon (or Undecagon)11147.273°Dodecagon12150°28 more rows

## How many degrees is a 6 sided shape?

720°In geometry, a hexagon (from Greek ἕξ hex, “six” and γωνία, gonía, “corner, angle”) is a six-sided polygon or 6-gon. The total of the internal angles of any simple (non-self-intersecting) hexagon is 720°.

## What is the formula for interior angles?

An interior angle is located within the boundary of a polygon. The sum of all of the interior angles can be found using the formula S = (n – 2)*180. It is also possible to calculate the measure of each angle if the polygon is regular by dividing the sum by the number of sides.

## What is a 9 sided shape called?

enneagonIn geometry, a nonagon (/ˈnɒnəɡɒn/) or enneagon (/ˈɛniəɡɒn/) is a nine-sided polygon or 9-gon.