# How Many Sides Does A Regular Polygon Have If The Interior Angle Is 18?

## What is a 70 sided shape called?

heptacontagonIn geometry, a heptacontagon (or hebdomecontagon from Ancient Greek ἑβδομήκοντα, seventy) or 70-gon is a seventy-sided polygon.

The sum of any heptacontagon’s interior angles is 12240 degrees..

## How many sides does a regular polygon have if the interior angle is 175?

72 sidesA regular polygon with each interior angle of 175 deg will have each exterior angle as 180–175 = 5 deg. Hence the number of sides in the regular polygon = 360/5 = 72 sides.

## What is the angle of a 8 sided polygon?

135°In geometry, an octagon (from the Greek ὀκτάγωνον oktágōnon, “eight angles”) is an eight-sided polygon or 8-gon….Octagon.Regular octagonSchläfli symbol{8}, t{4}Coxeter diagramSymmetry groupDihedral (D8), order 2×8Internal angle (degrees)135°5 more rows

## What is a 20 sided polygon called?

icosagonIn geometry, an icosagon or 20-gon is a twenty-sided polygon. The sum of any icosagon’s interior angles is 3240 degrees.

## What is a 69 sided polygon called?

Systematic polygon namesTensand60hexaconta–kai-70heptaconta-80octaconta-90enneaconta-5 more rows

## How many sides does a regular polygon have if the interior angle is 1080?

8 sidesThe polygon with an interior angle sum of 1080° is an octagon, or a polygon with 8 sides. We are given that the interior angle sum of our polygon…

## How many sides does a regular polygon have if each interior angle is?

The answer is 180° – 72° = 108°. (b) Calculate the number of sides in the regular polygon. We do this by dividing 360° by the size of one exterior angle, which is 72°. The answer is 360° ÷ 72° = 5 sides….Question 2.(a) a regular decagonexterior = °interior = °(b) a regular pentagonexterior = °interior = °

## How many sides does a regular polygon have if the interior angle is 150?

12 sidesIf each angle of a regular polygon measures 150°, then the polygon has 12 sides.

## What is a 19 sided shape called?

EnneadecagonIn geometry an enneadecagon or enneakaidecagon or 19-gon is a nineteen-sided polygon.

## What’s a 13 sided shape called?

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

## How do you find the interior angle of an N sided polygon?

Interior and exterior angle formulas:The sum of the measures of the interior angles of a polygon with n sides is (n – 2)180.The measure of each interior angle of an equiangular n-gon is.If you count one exterior angle at each vertex, the sum of the measures of the exterior angles of a polygon is always 360°.

## How do you find the interior angle of an 18 sided polygon?

To find the sum of the interior angles for any polygon use (n-2)*180 degrees where n is the number of sides.

## How many sides does a shape with an interior angle of 160 have?

18 sidesAnswer. If the interior angle of a regular polygon is 160 degrees, then the exterior angle is 20 degrees. The sum of all exterior angles is 360 degrees so there must be 360/20 sides = 18 sides.

## What is a 100000 sided shape called?

A megagon or 1 000 000-gon is a polygon with 1 million sides (mega-, from the Greek μέγας megas, meaning “great”).

## What is 12 sided shape called?

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

## What is a 10 sided shape?

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

## How many sides does a polygon have with an interior angle of 720?

**The students should see the pattern of numbers from the 1st column to the 4th column.Number of SidesName of PolygonSum of interior angles3Triangle180 degrees4Quadrilateral360 degrees5Pentagon540 degrees6Hexagon720 degrees6 more rows

## What is an 18 Gon?

In geometry, an octadecagon (or octakaidecagon) or 18-gon is an eighteen-sided polygon.

## What is a polygon with 18 sides?

An 18-sided polygon, sometimes also called an octakaidecagon.

## What is a 99 sided shape called?

Polygons with 21 to 99 sides have a different system. Take the prefix for the tens digit (found on the left column), the ones digit (right column below), and then stick a “kai” between them to get (tens)kai(ones)gon . The 3-digit sided polygons are named in a similar fashion. A 100-sided polygon is called a hectogon.