## Which of the following figure is a polygon?

Triangles, quadrilaterals, pentagons, and hexagons are all examples of polygons. The name tells you how many sides the shape has. For example, a triangle has three sides, and a quadrilateral has four sides.

## Is it a polygon or not?

The sides must be straight. Polygons may have any number of sides. A shape with curved sides is not a polygon. A shape that is not fully closed is not a polygon.

## Which of the following figure is an example of a regular polygon?

Examples of regular polygon: In the adjoining figure of an equilateral triangle ABC there are three sides i.e., AB, BC and CA are equal and there are three angles i.e., ∠ABC, ∠BCA and ∠CAB are equal. Therefore, an equilateral triangle is a regular polygon.

## What’s the correct name for the polygon?

Names of Polygons
Name Sides Interior Angle
Pentagon 5 108°
Hexagon 6 120°
Heptagon (or Septagon) 7 128.571°

## What are non polygons?

Non-polygon is a geometric object that does not conform the definition of polygon (see below).

## What are the 20 polygons?

Polygons: How Many Sides?
3 triangle, trigon
20 icosagon

## What is a polygon with 4 sides?

Definition: A quadrilateral is a polygon with 4 sides. … Definition: A parallelogram is a quadrilateral where both pairs of opposite sides are parallel.

## How many types of polygons are there?

A Polygon is classified based on its sides like a triangle, quadrilateral, pentagon, hexagon, heptagon, octagon, nonagon, and decagon according as it contains 3,4,5,6,7,8,9 and 10 sides, respectively.

Types of Polygons with Sides 3-20.
Name of the Polygon Number of sides Number of vertices
Icosagon 20 20

## What is a polygon with 3 sides?

triangle
List of n-gons by Greek numerical prefixes
Sides Names
3 trigon triangle
5 pentagon
6 hexagon

## What is a polygon with 5 sides?

A pentagon is a shape with 5 sides and 5 angles.

## What is a polygon with 8 sides?

Regular octagon
In geometry, an octagon (from the Greek ὀκτάγωνον oktágōnon, “eight angles”) is an eight-sided polygon or 8-gon.

Octagon.
Regular octagon
A regular octagon
Type Regular polygon
Edges and vertices 8
Schläfli symbol {8}, t{4}

## What is a polygon with 7 sides?

heptagon
A heptagon is a seven-sided polygon. It is also sometimes called a septagon, though this usage mixes a Latin prefix sept- (derived from septua-, meaning “seven”) with the Greek suffix -gon (from gonia, meaning “angle”), and is therefore not recommended.

## Are all 6 sided shapes hexagons?

Each hexagon has six sides, but those sides can have different properties. There are four different types of hexagons. These are regular hexagons, irregular hexagons, concave hexagons and convex hexagons.

## Is a rhombus a polygon?

In geometry, a Rhombus is a four-sided polygon having all the sides equal in length. Also, it is a special type of parallelogram in which opposite sides are parallel, and the opposite angles are equal.

## What is a polygon with 10 sides?

In geometry, a decagon (from the Greek δέκα déka and γωνία gonía, “ten angles”) is a ten-sided polygon or 10-gon. The total sum of the interior angles of a simple decagon is 1440°. A self-intersecting regular decagon is known as a decagram.

## Which polygon has 9 sides?

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

## What is a polygon with 9 sides?

A nine-sided shape is a polygon called a nonagon. It has nine straight sides that meet at nine corners, or vertices. The word “nonagon” comes from the Latin word “nona”, meaning nine, and “gon”, meaning sides.

## What is a polygon with 12 sides?

dodecagon
A dodecagon is a 12-sided polygon. Several special types of dodecagons are illustrated above. In particular, a dodecagon with vertices equally spaced around a circle and with all sides the same length is a regular polygon known as a regular dodecagon.

## What is a 11 sided polygon?

hendecagon
In geometry, a hendecagon (also undecagon or endecagon) or 11-gon is an eleven-sided polygon. (The name hendecagon, from Greek hendeka “eleven” and –gon “corner”, is often preferred to the hybrid undecagon, whose first part is formed from Latin undecim “eleven”.)

## What is a 100 sided polygon?

A 100-sided polygon is called a hectogon.