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What are different kinds of polygons how to identify and how many sides and their names?
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.
What are the polygons with 11-30 sides called?
41
Can you name all the polygons?
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!
What is the equation in 12y-9 equals 21?
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.
Is 21 over 30 in its lowest terms 7 over 10?
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
