what is an 11 sided polygon?
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An eleven sided polygon is called a hendecagon or also an undecagon.\n\nHendecagon is derived from the Greek word hendeca meaning eleven.
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a nine-sided polygon???  can't wait to see other answers...
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Triangle, quadrilateral, pentagon, hexagon, heptagon, octagon, nonagon, decagon
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line = 1 side\nparallel lines = 2 sides\ntriangle = 3 sides\nsquare/ rectangle = 4 sides\npentagon = 5 sides\nhexagon = 6 sides\nheptagon = 7 sides\noctagon = 8 sides\nnonagon = 9 sides\ndecagon = 10 sides\n\ni hope i have helped you.... good luck
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a 20 faced polyhedron is called an \nicosahedron-the faces are equilateral\ntriangles\na 20 sided polygon is called an\nicosagon\n\ni hope that this helps
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number of sides, congurency?, size of angles, distinguishing characteristics
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6 faces, 12 edges, 8 vertices
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pentagon DUH! lol sry (Hexagon is SIX!)im in geometry rite now so yea
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now, if you add that it has 4 sides and all right angles, you probably can pass that off as the definition of a rectangle.\n\notherwise you just have a parallelogram.
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11 - undeca\n\n12 - dodeca\n\nEX:\n\nundecagon - polygon with 11 sides.\n\ndodecagon - polygon with 12 sides.
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An *exterior* angle for a polygon is formed by extending one side of the polygon from one if its endpoints. The exterior angle and interior angle are therefore supplementary. If you extend each side of a polygon to form one exterior angle at each vertex, you get a set of exterior angles as shown in the attached diagram.\nhttp://www.geom.uiuc.edu/~dwiggins/pict09.GIF\n\nBe careful because some people have a mistaken definition of exterior angles and assume it is the full obtuse angle, but it isn't.\n\nBy theorom, the exterior angles in a convex polygon always add up to 360 degrees.  A regular 10-sided polygon is one example of a convex polygon, so its exterior angles would also add up to 360 degrees.  Because all the angles are equal in a regular polygon you would have:\n\n360 / 10\n= 36 degrees\n\nSo with a regular decagon (10-sided polygon), each exterior angle would be 36 degrees.
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Eleven if you count the two adjacent sides of the polygon, otherwise nine.\n\nThinking outside the box answer:\nUnlimited if one does not limit themselves to the other vertices as termini.
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You can't have a polygon of that size.  A polygon is an object with three or more straight sides.  One property of a polygon is that no one side can be longer than all the other sides added together.  You listed 6 dimensions, implying a six sided polygon.  But since one side is much longer than the other five together, this is not a real object.\n\nTry taking a yardstick and five toothpicks and put them together to make a polygon shape.  It won't work.\n\nIncidentally, even if you gave realistic dimensions, that's not enough information.  Consider this 6-sided object:\n._\n/ .&#92;\n&#92;_/\nand this one:\n||\n||\n||\n\nEven if the sides were all the same length, they have different areas because the angles are different.
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Let n = number of sides = 5\n\nSum of the interior angles = (n - 2) * 180° = 540°\n\nThis comes from the fact that a triangle has angles adding to 180°, a square has angles adding to 360°, a pentagon has angles adding to 540°, etc.  Each time you add a side, you add another 180 degrees.\n\nHowever there are no 1 sides or 2 sided figures, so you have to subtract 2 from the sides, before multiplying.\n\nThe general formula for an n-sided polygon is:\n(n - 2) * 180°
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Each polygon has a different formula. Check out the source for more.
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for a cube with 6 faces, the edges would be 8
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210 \n The sum of interior angles of a polygon (sides-2)*180.\nfor 12 sided it's (12-2)*180=1800.\n\nFor a regular 12 sided polygon, each interior angle is 1800/12=150, so the exterior angle is 360-150= 210