# Question: What Is An Irregular 8 Sided Shape Called?

## What is an irregular shape called?

A polygon that does not have all sides equal and all angles equal.

(A polygon is “regular” only when all angles are equal and all sides are equal, otherwise it is irregular.).

## What do you call an irregular 5 sided shape?

A five-sided shape is called a pentagon. A six-sided shape is a hexagon, a seven-sided shape a heptagon, while an octagon has eight sides…

## What shape has 8 sides that are not equal?

octagonAn octagon is an 8-sided polygon (a flat shape with straight sides).

## What is a 9 sided shape called?

enneagonIn geometry, a nonagon (/ˈnɒnəɡɒn/) or enneagon (/ˈɛniəɡɒn/) is a nine-sided polygon or 9-gon. The name nonagon is a prefix hybrid formation, from Latin (nonus, “ninth” + gonon), used equivalently, attested already in the 16th century in French nonogone and in English from the 17th century.

## Is circle a regular shape?

Is a circle a regular shape or an irregular shape? … Regular means predictable, with the fewest possible variations. So yes, a circle is about as regular as a shape can be. You can define a circle with just a center and a radius.

## Does a rhombus have 4 right angles?

A Rhombus is a flat shape with 4 equal straight sides. Opposite sides are parallel, and opposite angles are equal (it is a Parallelogram). And the diagonals “p” and “q” of a rhombus bisect each other at right angles.

## What is a 10 sided shape?

In geometry, a decagon is a ten-sided polygon or 10-gon.

## What’s a 1 sided shape called?

List of n-gons by Greek numerical prefixesSidesNames1henagonmonogon2digonbigon3trigontriangle4tetragonquadrilateral7 more rows

## What are the examples of irregular shapes?

Any polygon that does not have all congruent sides is an irregular polygon. Irregular polygons can still be pentagons, hexagons and nonagons, but they do not have congruent angles or equal sides. Here are some examples of irregular polygons.

## What is difference between regular and irregular polygon?

A regular polygon is a shape that has all sides and angles the same size. An irregular polygon is a shape that has different sized angles and sides.

## How do you prove a shape is a rhombus?

If the diagonals of a quadrilateral bisect all the angles, then it’s a rhombus (converse of a property). If the diagonals of a quadrilateral are perpendicular bisectors of each other, then it’s a rhombus (converse of a property).

## What are 7 9 and 10 sided shapes called?

2D ShapesTriangle – 3 SidesSquare – 4 SidesPentagon – 5 SidesHexagon – 6 sidesHeptagon – 7 SidesOctagon – 8 SidesNonagon – 9 SidesDecagon – 10 SidesMore …

## Is any 5 sided shape a Pentagon?

In geometry, a pentagon (from the Greek πέντε pente and γωνία gonia, meaning five and angle) is any five-sided polygon or 5-gon. … The sum of the internal angles in a simple pentagon is 540°. A pentagon may be simple or self-intersecting.

## What is an irregular Heptagon?

An irregular heptagon is any heptagon with sides and angles that are not all congruent.

## What is an example of an irregular polygon?

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

## Is a rhombus an irregular shape?

A regular polygon must be equilateral (all of its sides are the same length) and equiangular (all of its angles are the same measure). A rhombus is equilateral: all of its sides are of the same length. … A rhombus can never be a regular polygon because it is not equiangular.

## Is a star an irregular shape?

In geometry, a star polygon is a type of non-convex polygon. Only the regular star polygons have been studied in any depth; star polygons in general appear not to have been formally defined, however certain notable ones can arise through truncation operations on regular simple and star polygons.

## What are the 4 properties of a rhombus?

Properties of RhombusAll sides of the rhombus are equal.The opposite sides of a rhombus are parallel.Opposite angles of a rhombus are equal.In a rhombus, diagonals bisect each other at right angles.Diagonals bisect the angles of a rhombus.The sum of two adjacent angles is equal to 180 degrees.More items…•