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A regular pentagon has 5 equal edges and 5 equal angles. In geometry, a polygon /ˈpɒlɪɡɒn/ is traditionally a plane figure that is bounded by a finite chain of straight line segments closing in a loop to form a closed chain or circuit. These segments are called its edges or sides, and the points where two ... eleven , eleventh, hendeka, hendekatos.


In geometry, a hendecagon (also undecagon or endecagon) or 11-gon is an eleven-sided ... The area of a regular hendecagon with side length a is given by. A = 11 4 a 2 ... The regular hendecagon has Dih11 symmetry, order 22. Since 11 is a ...


Naming a polygon by its number of sides requires that we know the appropriate Greek ... 11. = undeca or hendeca. 12. = dodeca. 13. = triskaideca. 14. = tetradeca. 15 ... When you think have the name, click on the ANSWER button to check.


A 11 sided shape is a hendecagon right what do you think is a 12 sided shape? Lancastic · 2 ... All together they have 12 sides and 12 vertices.


Dec 2, 2003 ... 9= nonagon 10=decagon 11=undecagon 12=dodecagon i dont know the rest, but I'm in the 8th grade and I know better than you!


... different names? Thank you for your help. Hi Manuel. There seems to be an " official"set of names for polygons, uniformly derived from the Greek (after 4 sides) .


Regular Polygons. A polygon is a plane (2D) shape with straight sides. ... Nonagon - 9 Sides, 2d decagon ... These 2D shapes have curves, so are not polygons: ...


Dec 26, 2015 ... 12 is dodecagon 11 is hendecagon also undecagon or endecagon.


A geometrical figure with three or more sides is called a polygon or a polyhedron. Here are the names for some polygons.