## How many sides does a decagon have?

10 side

What is a Decagon? A decagon is a polygon that is easily identified by one key trait – it’s a 10 side shape with ten interior angles and ten vertices.

**How many triangles are in a decagon?**

There are 8 triangles in a decagon.

### What side is a decagon?

10

Polygons: How Many Sides?

3 | triangle, trigon |
---|---|

8 | octagon |

9 | nonagon, enneagon |

10 | decagon |

11 | hendecagon |

**What is an example of a decagon?**

Decagons can be commonly seen in various things in the surroundings, such as coasters, coins, umbrellas, drums, watches, cutlery etc. Also, a decagon is an intriguing form of polygons and is widely used while doing wall art.

#### How do you make a decagon shape?

Use the pentagon shape as an alternative method. Lightly draw and measure a regular pentagon. Lightly draw another identical pentagon directly over the original, rotated 180 degrees. Draw a line between each point of both pentagons to get a decagon shape.

**What object is a decagon?**

## How many sides and vertices does a decagon have?

According to the properties of a decagon, the total number of sides is 10 made by joining 10 vertices. As there are only 10 sides and 10 vertices, therefore, the number of interiors and exteriors angles formed by all 10 sides are also 10. How Many Vertices and Diagonals Do a Regular Decagon Have? A regular decagon has 10 vertices and 35 diagonals.

**What are the characteristics of a decagon?**

Decagon Definitions. A decagon is a 10-sided polygon, with 10 interior angles, and 10 vertices which is where the sides meet. A regular decagon has 10 equal-length sides and equal-measure interior angles. Each angle measures 144 ° and they all add up to 1,440 °. An irregular decagon has sides and angles that are not all equal or congruent.

### How do you find the number of diagonals of a decagon?

The diagonals of a decagon are found by using the formula n (n-3) ÷ 2, where n is a number of sides that is 10. So, 10 (10-3) ÷ 2 = 35.

**How hard is it to draw a decagon?**

Drawing a regular, convex decagon, however, takes real skill, since each interior angle must be 144 °, and all sides must be equal in length. Drawing a concave decagon is actually fairly easy: make a five-pointed star and fill it in.