A polygon has 3 or more sides and some of the better known of them with names and sides are as follows:- Triangle has 3 sides Quadrilateral has 4 sides Pentagon has 5 sides Hexagon has 6 sides Heptagon has 7 sides Octagon has 8 sides Nonagon has 9 sides Decagon has 10 sides Undecagon has 11 sides Dodecagon has 12 sides The list can go on and on but its perfectly acceptable to call as for example a 30 sided polygon a 30-agon.
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Not really, because there are an infinitely large number of polygons. Just keep adding another side to the last one you had and you can go on forever. There are special names for a small group of polygons, starting with one that has three sides, the triangle, and continuing on to four sides (quadrilateral), five sides (pentagon), six (hexagon), and even eight (octagon) or ten (decagon). Once you get past that group, you just name a polygon by the number of sides it has. You call it a 20-gon, or a 30-gon.With the variable n representing the number of sides. There are also Shapes called quadrilaterals which are a group of 4 sided shapes including a square, a rectangle a trapezium and many more! That is what I know and what I can tell you!
The equation is 12y - 9 = 21. To solve for y, you can start by adding 9 to both sides to isolate the term with y. This gives you 12y = 30. Next, divide both sides by 12 to solve for y, which gives y = 2.5.
Yes, because 3 is the only number that both can be divided by to further reduce both sides. 21/3 = 7, 30/3= 10 so, 21/30 = 7/10
A polygon has 3 or more sides and some of the better known of them with names and sides are as follows:- Triangle has 3 sides Quadrilateral has 4 sides Pentagon has 5 sides Hexagon has 6 sides Heptagon has 7 sides Octagon has 8 sides Nonagon has 9 sides Decagon has 10 sides Undecagon has 11 sides Dodecagon has 12 sides The list can go on and on but its perfectly acceptable to call as for example a 30 sided polygon a 30-agon.
You can either call them by n-gon for n sides (i.e. 21-gon) or combine a prefix and suffix (i.e. Icosikaihenagon). No. of No. of Sides Name Prefix Name Suffix Sides 20 Icosikai... ...henagon 1 30 Triacontakai... ...digon 2 40 Tetracontakai... ...trigon 3 50 Pentacontakai... ...tetragon 4 60 Hexacontakai... ...pentagon 5 70 Heptacontakai... ...hexagon 6 80 Octacontakai... ...heptagon 7 90 Enneacontakai... ...octagon 8 ...enneagon 9 source: http://www.pubquizhelp.com/sci/polygon.html
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Who knows? Well, maybe me.... I think it might be a decicosagon, because I figure that all polygons from 21-30 end in icosagon, and because all the 13-20 begin with the 3-9 sided shape names.. (apart from 19, with is the enneadecagon of course) the answer will be... A. Decicosagon
Not really, because there are an infinitely large number of polygons. Just keep adding another side to the last one you had and you can go on forever. There are special names for a small group of polygons, starting with one that has three sides, the triangle, and continuing on to four sides (quadrilateral), five sides (pentagon), six (hexagon), and even eight (octagon) or ten (decagon). Once you get past that group, you just name a polygon by the number of sides it has. You call it a 20-gon, or a 30-gon.With the variable n representing the number of sides. There are also Shapes called quadrilaterals which are a group of 4 sided shapes including a square, a rectangle a trapezium and many more! That is what I know and what I can tell you!
3 sides= triangle 4 sides= quadrilateral 5 sides= pentagon 6 sides= hexagon 7 sides= heptagon 8 sides= octagon 9 sides= nonagon 10 sides= decagon 11 sides= hendecagon 12 sides= dodecagon 13 sides= tridecagon/13-gon 14 sides= tetradecagon/14-gon 15 sides= pentadecagon/15-gon 16 sides= hexadecagon/16-gon 17 sides= heptadecagon/17-gon 18 sides= octadecagon/18-gon 19 sides= enneadecagon/19-gon 20 sides= icosagon/20-gon 30 sides= triacontagon/30-gon 40 sides= tetracontagon/40-gon 50 sides= pentacontagon/50-gon 60 sides= hexacontagon/60-gon 70 sides= heptacontagon/70-gon 80 sides= octcontagon/80-gon 90 sides= nonacontagon/90-gon 100 sides= hectagon/100-gon 1,000 sides= chiliagon/1,000-gon 10,000 sides= myriagon/10,000-gon 100,000 sides= decimyriagon/100,000-gon 1,000,000 sides= hecatommyriagon/1,000,000-gon Since there are infinitely many polygons, it is impossible to list the names of all of them.
The equation is 12y - 9 = 21. To solve for y, you can start by adding 9 to both sides to isolate the term with y. This gives you 12y = 30. Next, divide both sides by 12 to solve for y, which gives y = 2.5.
Number of triangles in a polygon is determined by (n-2) = number of triangles, whereas n is the number of sides of the polygon
No.(20)2 = 400(21)2 = 441(20)2 + (21)2 = 881(30)2 = 900(20)2 + (21)2 is not equal to (30)2
number of sidesname of polygon3triangle4quadrilateral5pentagon6hexagon7heptagon8octagon9nonagon10decagon11hendecagon12dodecagon13tridecagon or triskaidecagon14tetradecagon15pentadecagon, pentakaidecagon or quindecagon16hexadecagon or hexakaidecagon17heptadecagon, heptakaidecagon, or septadecagon18octadecagon or octakaidecagon19enneadecagon, enneakaidecagon, or nonadecagon20icosagon30triacontagon40tetracontagon50pentacontagon60hexacontagon70heptacontagon80octacontagon90enneacontagon or nonacontagon100hectagon1000chiliagon10000myriagon1000000hecatommyriagon or hekatommyriagon10100 googolgon
Yes, because 3 is the only number that both can be divided by to further reduce both sides. 21/3 = 7, 30/3= 10 so, 21/30 = 7/10
If the exterior angle is 30o then the shape has 360/30 = 12 sides. An interior angle = 180 - exterior angle = 180 - 30 = 150. Since the shape has 12 sides the interior angles sum to 150 x 12 = 1800o.