#### What is the interior angle of a regular decagon

## How do you find the interior angle of a regular decagon?

The sum of the measures of the interior angles of a decagon (10 sided polygon) is 1,440. We found this by using the formula (n-2)(180). Thus, to find the measure of each interior angle we simply divide the sum by the number of total sides in the polygon. 1,440/10 = 144.

## What is the interior angle sum of a regular decagon?

1440 degrees

## What is the interior angle of a regular 18 sided polygon?

Regular Polygons

Sides | Name | Interior Angles |
---|---|---|

18 | Octdecagon | 160.00° |

19 | Enneadecagon | 161.05° |

20 | Icosagon | 162.00° |

30 | Triacontagon | 168.00° |

## What is the interior angle of a regular?

All the interior angles in a regular polygon are equal. The formula for calculating the size of an interior angle is: interior angle of a polygon = sum of interior angles ÷ number of sides. The sum of exterior angles of a polygon is 360°.

## 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 the interior angle of Pentagon?

108°

## What is the interior angle sum of a hexagon?

720°

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

900°

## What is the sum of the interior angles of a 21 Gon?

Explanation : Sum of the measures of the interior angles of a polygon of n sides is (n−2)×180∘ .

## What is a 70 sided shape called?

heptacontagon

## What is the interior angle of a 20 sided polygon?

3240 degrees

## How many interior angles does an 18 gon have?

In geometry, an octadecagon (or octakaidecagon) or 18 – gon is an eighteen – sided polygon . Octadecagon.

Regular octadecagon | |
---|---|

Symmetry group | Dihedral (D _{18} ), order 2× 18 |

Internal angle (degrees) | 160° |

Dual polygon | Self |

Properties | Convex, cyclic, equilateral, isogonal, isotoxal |

## What is the sum of the interior angle of a triangle?

180°

## What is an interior angle of a triangle?

60° (for equilateral)

## What does interior angle mean?

1 : the inner of the two angles formed where two sides of a polygon come together. 2 : any of the four angles formed in the area between a pair of parallel lines when a third line cuts them.