# What Is A Shape With 8 Sides

octagon

## What is a shape with 8 sides called?

Octagon (8 sides)

## How many 8 sided shapes are there?

Polygons: How Many Sides?
3 triangle trigon
8 octagon
9 nonagon enneagon
10 decagon
11 hendecagon

## What is the shape with 9 sides?

nonagon
In 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 a hexagon 8 sides?

Eight-Sided Shapes:

A shape with six sides is called a hexagon and a shape with seven sides is called a heptagon.

## What 3d shape has 8 sides?

Octahedron
Regular octahedron
Faces by sides 8{3}
Conway notation O aT
Schläfli symbols {3 4}
r{3 3} or

## How does a octagon look like?

A regular octagon is a closed shape with sides of equal length and interior angles of the same measurement. It has eight symmetric lines and rotational equilibrium of order 8. The interior angle at each vertex of a regular octagon is 135°. The central angle is 45°.

## Does octagon have equal sides?

In a regular octagon all the sides are equal in length and all the angles are equal in measure. The interior angles add up to 1080° and the exterior angles add up to 360°. The interior angle at each vertex of a regular octagon is 135°.

## What degree is a octagon?

1080 degrees

Explanation: An octagon contains six triangles or 1080 degrees. This means with 8 angles each angle is 135 degrees.

## What kind of shape has 10 sides?

decagon

In geometry a decagon (from the Greek δέκα déka and γωνία gonía “ten angles”) is a ten-sided polygon or 10-gon.

Decagon.
Regular decagon
A regular decagon
Type Regular polygon
Edges and vertices 10
Schläfli symbol {10} t{5}

## What do you call a 12 sided shape?

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 100 sided shape called?

hectogon
In geometry a hectogon or hecatontagon or 100-gon is a hundred-sided polygon. The sum of all hectogon’s interior angles are 17640 degrees.

## What does a Heptagon look like?

The heptagon shape is a plane or two-dimensional shape comprised of seven straight sides seven interior angles and seven vertices. A heptagon shape can be regular irregular concave or convex. … All heptagons can be divided into five triangles. All heptagons have 14 diagonals (line segments connecting vertices)

## What is a pentagon look like?

A pentagon shape is a flat shape or a flat (two-dimensional) 5-sided geometric shape. In geometry it is considered as a is a five-sided polygon with five straight sides and five interior angles which add up to 540°.

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## What does a Hexahedron look like?

A hexahedron is a 3-dimensional shape with six faces straight edges and sharp corners the cube is probably the most recognizable hexahedron. There are different kinds of hexahedra: convex and concave. Among the convex hexahedra are seven quadrilaterallly-faced hexahedra where all six faces have four sides.

## How many sides does an octagon?

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

## What has 8 edges 5 faces and vertices?

rectangular pyramid

A rectangular pyramid has 5 faces. Its base is a rectangle or a square and the other 4 faces are triangles. It has 8 edges and 5 vertices.

## How do you find the sides of an octagon?

Multiply the diameter’s length the distance from vertex to opposite vertex by 0.383 to calculate a side’s length. For example the diameter is 10 inches — 10 inches multiplied by 0.383 results in 3.83 inches.

## How do you measure an octagon?

All sides are the same length (congruent) and all interior angles are the same size (congruent). To find the measure of the angles we know that the sum of all the angles is 1080 degrees (from above)… And there are eight angles… So the measure of the interior angle of a regular octagon is 135 degrees.

## What can be an octagon?

Things That Are Shaped in an Octagon Shape
• Stop Signs. ••• In the United States everyone is familiar with the octagon-shaped stop sign. …
• Mirrors. ••• Although mirrors are usually square or round there are plenty made in the shape of an octagon. …
• Tiles. ••• …
• UFOs. ••• …
• Candles. ••• …
• Windows. •••

## What is an example of an octagon?

Some of the most popular examples of the octagon are the STOP signboard and umbrella. The word ‘Octagon’ has been derived from the Greek word ‘ὀκτάγωνον’ (oktágōnon) which means eight angles. This is how the shape with eight angles was named Octagon.

## Does an octagon have corners?

An octagon has eight straight sides and eight vertices (corners). It has eight angles inside it that add up to 1080°. If you see a word that begins with “oct” it often has a meaning to do with the number eight.

## What angle do I cut to make an octagon?

Set your miter saw at 22.5 degrees. This is the angle you need to cut at to make an octagon shape.

## How many triangles make up an octagon?

Method 2: Dividing a Regular Octagon into 8 Triangles

Divide the octagon into 8 triangles. Each triangle has 2 sides of equal length.

135°

## What is a 1000000 sided shape called?

Regular megagon

Megagon
Regular megagon
A regular megagon
Type Regular polygon
Edges and vertices 1000000
Schläfli symbol {1000000} t{500000} tt{250000} ttt{125000} tttt{62500} ttttt{31250} tttttt{15625}

## What is a 15 sided shape?

In geometry a pentadecagon or pentakaidecagon or 15-gon is a fifteen-sided polygon.

Type Regular polygon
Edges and vertices 15
Schläfli symbol {15}

## What is a 7 sided shape?

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.

## What is the 11th shape?

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 the name of a 666 sided shape?

Chiliagon
Regular chiliagon
Coxeter–Dynkin diagrams
Symmetry group Dihedral (D1000) order 2×1000
Internal angle (degrees) 179.64°
Properties Convex cyclic equilateral isogonal isotoxal

## What polygon has 13 sides?

Tridecagon

A 13-sided polygon sometimes also called the triskaidecagon.

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