Table of Contents

## Is an octagon the only shape with 8 sides?

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

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Octagon.

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Octagon.

Regular octagon | |
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Coxeter–Dynkin diagrams | |

Symmetry group | Dihedral (D_{8}), order 2×8 |

Internal angle (degrees) | 135° |

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

**irregular octagon**. In other words, an irregular Octagon has eight unequal sides and eight unequal angles. It is an octagon with unequal sides and angles. All the interior angles are of different measure, but their sum is always 1080º.

## How many 8 sided shapes are there?

Polygons: How Many Sides?

3 | triangle, trigon |
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8 |
octagon |

9 | nonagon, enneagon |

10 | decagon |

11 | hendecagon |

## What is a trapezoid shape?

**a quadrilateral with one pair of opposite sides parallel**. It can have right angles (a right trapezoid), and it can have congruent sides (isosceles), but those are not required.

## What does a trapezoid look like?

## What shape is a rhombus?

**a diamond shape**.

## What is a 3d octagon called?

**octagonal prism**is the sixth in an infinite set of prisms, formed by square sides and two regular octagon caps.

## What is a 3d 8 sided shape called?

**an octahedron**(plural: octahedra, octahedrons) is a polyhedron with eight faces. The term is most commonly used to refer to the regular octahedron, a Platonic solid composed of eight equilateral triangles, four of which meet at each vertex.

## What is a 100 sided shape called?

hectogon

A 100-sided polygon is called a

**hectogon, centagon or 100-gon**.## What is not a polygon?

**A circle**is not a polygon. Since, a polygon is a closed curve made up of only line segments.

## What’s a shape with 9 sides called?

**A nonagon**is a nine sided polygon and it is also called an Enneagon or 9-gon. In other words, a nonagon is a nine sided closed two dimensional figure.

## Is a rhombus a trapezoid?

**Yes, a rhombus is a special type of trapezoid**.

## What makes a rhombus?

**all four sides are equal in length and opposite sides are parallel to each other**. However, the angles are not equal to 90°. A rhombus with right angles would become a square.

## What is a kite shape?

**a quadrilateral that has 2 pairs of equal-length sides and these sides are adjacent to each other**. Properties: The two angles are equal where the unequal sides meet. It can be viewed as a pair of congruent triangles with a common base. It has 2 diagonals that intersect each other at right angles.

## Is rhombus a triangle?

**It is a special type of parallelogram**, and its properties (aside from those properties of parallelograms) include: Its diagonals divide the figure into 4 congruent triangles.

## Is a rectangle a rhombus?

**The dual polygon of a rhombus is a rectangle**: A rhombus has all sides equal, while a rectangle has all angles equal. A rhombus has opposite angles equal, while a rectangle has opposite sides equal. A rhombus has an inscribed circle, while a rectangle has a circumcircle.

## Is a square a rhombus?

**squares are by definition also rhombuses**.

## What is a 3d diamond called?

**octahedron**(any 8-sided solid is an octahedron.) The cut diamonds may have upto 58 phases.

## What shape is a diamond?

**a quadrilateral**, a 2-dimensional flat figure that has four closed, straight sides. But a diamond is also categorized as rhombus, because it has four equal sides and its opposite angles are equal. And, because its opposite sides are parallel, it’s also considered to be a parallelogram.