## How many degrees are in each angle of a 20-gon?

The measure of each interior angle of a regular 20-gon is 162°.

**What is the angle of a 20 sided polygon?**

162°

In geometry, an icosagon or 20-gon is a twenty-sided polygon….Icosagon.

Regular icosagon | |
---|---|

Symmetry group | Dihedral (D20), order 2×20 |

Internal angle (degrees) | 162° |

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

**What is the measure of exterior angle of a 20-gon?**

18°

The measure of each exterior angle of a regular 20-gon is 18°.

### What is the sum of the interior angles in a 20-gon?

3240°Icosagon / Sum of interior angles

**What are the angles of rotation for a 20-gon how many lines of symmetry lines of reflection will it have?**

What are the angles of rotation for a 20-gon? How many lines of symmetry (lines of reflection) will it have? 18° 20 lines of symm.

**How many diagonals does a 20-gon have?**

170 diagonals

Therefore, for a 20-sided polygon, there will be 190 lines and 170 diagonals.

#### How many sides are there in 20-gon?

20Icosagon / Number of edges

**How do you find the sum of a 20-gon?**

1 Expert Answer The sum of the interior angles of a regular n-gon is given by the formula (n-2)180. Hence, in our case n=20 and we have the answer of 18(180)=3240 degrees.

**How many rotational symmetries does a 12 gon have?**

A regular dodecagon is a figure with sides of the same length and internal angles of the same size. It has twelve lines of reflective symmetry and rotational symmetry of order 12.

## How many diagonals does Icosagon have?

The diagonals of a dodecagon are 54, of a pentadecagon are 90, of an icosagon are 170, and of a hectagon are 4850.

**How many vertices does a 20-gon have?**

20Icosagon / Number of vertices

**Which polygon has 170 diagonals?**

20 sided polygon

Hence there will be 170 diagonals in a 20 sided polygon.