## What are the interior angles of a regular decagon?

144°

Decagon/Internal angle

### What is the formula for sum of interior angles?

The formula for calculating the sum of interior angles is ( n − 2 ) × 180 ∘ where is the number of sides. All the interior angles in a regular polygon are equal.

**What is a 22 Gon?**

In geometry, an icosidigon (or icosikaidigon) or 22-gon is a twenty-two-sided polygon. The sum of any icosidigon’s interior angles is 360 degrees.

**What is the sum of interior angles of Undecagon?**

1620°

Hendecagon/Sum of interior angles

## What is the sum of 3 of the interior angles of a regular hexagon?

The sum of the interior angles of a hexagon must equal 720 degrees.

### What is the sum of a hexagons interior angles?

720°

Hexagon/Sum of interior angles

**What is the sum of interior angles of a triangle?**

180°

Triangle/Sum of interior angles

**What is the sum of 22 sided polygon?**

. The sum of the exterior angles of any n-gon is 360˚. Find the sum of the interior angles of a 22-gon. Since the polygon has 22 sides, we can substitute this number for n: (n 2)180˚= (22 2)180˚= 20180˚= 3600˚.

## What is a 24 sided shape called?

icositetragon

In geometry, an icositetragon (or icosikaitetragon) or 24-gon is a twenty-four-sided polygon. The sum of any icositetragon’s interior angles is 3960 degrees.

### What is the sum of Undecagon?

Properties of all undecagons

Number of diagonals | 44 |
---|---|

Number of triangles | 9 |

Sum of interior angles | 1620° |

**What is the interior sum of angles of a hexagon?**

**What is the size of each interior angle of a regular decagon?**

A regular decagon is a regular 10-sided polygon or 10-gon ie all 10 sides are of equal lengths. Each internal angle will always be equal to 144 degrees. Each internal angle = 1440/10 = 144 degrees.

## What is the exterior sum of angles in a dodecagon?

A dodecagon is a type of polygon with these properties: No matter the shape, a regular polygon can have its exterior angles add to no more than 360°. Think: to go around the shape, you make a complete circle: 360°. So, divide 360° by the dodecagon’s twelve exterior angles. Each exterior angle is 30° .

### What is the interior angle sum of a 15-gon?

The sum of the interior angles is therefore #180°(n-2)# . In a #15#-sided polygon: Sum interior angles = #180(15-2) = 180 xx13 = 2340°# . Each interior angle of the regular polygon = #(2340°)/15 = 156°#.

**What is the measure of interior angles?**

An interior angle has its vertex at the intersection of two lines that intersect inside a circle. The sides of the angle lie on the intersecting lines. The measure of an interior angle is the average of the measures of the two arcs that are cut out of the circle by those intersecting lines.