Web Results

mathcentral.uregina.ca/QQ/database/QQ.09.96/rosa1.html

After about 6 sides mathematicians usually refer to these polygons as n-gons. So your 13 sided polygon I would call a 13-gon. Cheers, Walter and Harley Go to Math Central. To return to the previous page use your browser's back button.

en.wikipedia.org/wiki/Nonagon

In geometry, a nonagon (/ ˈ n ɒ n ə ɡ ɒ n /) or enneagon (/ ˈ ɛ n i ə ɡ ɒ n /) 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.

en.wikipedia.org/wiki/Polygon

An n-gon is a polygon with n sides; for example, a triangle is a 3-gon. A simple polygon is one which does not intersect itself. Mathematicians are often concerned only with the bounding polygonal chains of simple polygons and they often define a polygon accordingly.

www.reference.com/math/nine-sided-shape-called-680afddabbcb9b5c

What Do You Call a Polygon With Four Sides, None of Which Are the Same Size? What Is a 10-Sided Shape Called? What Do You Call a Shape With Eight Sides? What Is a Regular Shape in Math? Related Search. What Is a Nine-Sided Shape Called? five sided shape 7 sided shape 6 sided shape name area of 5 sided shape 9 sided circle a shape with 9 sides 9 ...

www.mathsisfun.com/geometry/polygons

Polygons A polygon is a plane shape with straight sides. Is it a Polygon? Polygons are 2-dimensional shapes. They are made of straight lines, and the shape is "closed" (all the lines connect up).

www.calculatorsoup.com/calculators/geometry-plane/polygon.php

A regular polygon is a polygon that is both equiangular and equilateral. All sides are equal length placed around a common center so that all angles between sides are also equal. When the number of sides, n, is equal to 3 it is an equilateral triangle and when n = 4 is is a square.

www.math.com/tables/geometry/polygons.ht

Convex - a straight line drawn through a convex polygon crosses at most two sides.Every interior angle is less than 180°. Concave - you can draw at least one straight line through a concave polygon that crosses more than two sides.At least one interior angle is more than 180°.