Quick Answer: What’S A 8 Sided Shape Called?

What is a 10 sided shape called?

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

What is the angle of a 8 sided polygon?

1080 degreesThe sum of the interior angles in a regular polygon is given by the formula 180(n – 2), where n is the number of sides in the polygon. An octagon has eight sides, so the sum of the angles of the octagon is 180(8 – 2) = 180(6) = 1080 degrees.

What is a 16 sided shape called?

hexakaidecagonIn mathematics, a hexadecagon (sometimes called a hexakaidecagon or 16-gon) is a sixteen-sided polygon.

What’s a twelve sided shape called?

dodecagonIn geometry, a dodecagon or 12-gon is any twelve-sided polygon.

Are all 8 sided shapes octagons?

An octagon is an 8 sided polygon with interior angles that add to 1080 degrees. Regular octagons have sides of equal length and interior angles of 135 degrees. A nonagon is a 9 sided polygon with interior angles that add to 1260 degrees….TriangleSquareHeptagonOctagonNonagonDecagonPentadecagonIcosagon1 more row

What is an L shape called?

L-Shape Calculator Calculations at an L-shape. This is a special shape of a concave hexagon, made of two perpendicular rectangles with equal width. … Choose the number of decimal places and click Calculate.

What degrees is a hexagon?

Explanation: The sum of the interior angles of a hexagon must equal 720 degrees. Because the hexagon is regular, all of the interior angles will have the same measure. A hexagon has six sides and six interior angles.

Is any shape with 8 sides an octagon?

In geometry, an octagon (from the Greek ὀκτάγωνον oktágōnon, “eight angles”) is an eight-sided polygon or 8-gon. A regular octagon has Schläfli symbol {8} and can also be constructed as a quasiregular truncated square, t{4}, which alternates two types of edges. A truncated octagon, t{8} is a hexadecagon, {16}.

What is a 7 sided shape called?

heptagonA six-sided shape is a hexagon, a seven-sided shape a heptagon, while an octagon has eight sides… The names of polygons are derived from the prefixes of ancient Greek numbers.

What is a 50 sided shape called?

pentacontagonIn geometry, a pentacontagon or pentecontagon or 50-gon is a fifty-sided polygon. The sum of any pentacontagon’s interior angles is 8640 degrees. A regular pentacontagon is represented by Schläfli symbol {50} and can be constructed as a quasiregular truncated icosipentagon, t{25}, which alternates two types of edges.

What is a 69 sided shape called?

Systematic polygon namesTensOnes60hexaconta-670heptaconta-780octaconta-890enneaconta-95 more rows

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.

Are the sides of an octagon equal?

Regular and Irregular Octagon A regular octagon is a closed shape with sides of the 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°.

What’s a 13 sided shape called?

tridecagonIn geometry, a tridecagon or triskaidecagon or 13-gon is a thirteen-sided polygon.