How many degrees are in a Heptagon?
542325
Triangle: 180\nSquare: 360\nPentagon: 540\nHexagon: 720\nHeptagon: 900\n\nIn general:\nn-agon: (n-2) * 180\n\nWith seven angles in a heptagon, each angle is 128.581427... degrees.  The total is 900 degrees.\n\nDespite what others have posted here, the answer is *not* 360 degrees in every polygon.  Even if you don't know the right answer for a heptagon, intuitively you know that a triangle is 180, a square is 360.  If every polygon was 360, then the angles in a pentagon would be less than 90 degrees, and the angles would get smaller and smaller... but actually, the individual angles get closer and closer to 180.  And the heptagon doesn't need to be a regular heptagon for the angles to still add up to 900, any heptagon will do.
516070
a hexagonal prism we learned about it in geometry
1175205
In a full circle there are 360 degrees. \nEach degree is split up into 60 parts, each part being 1/60 of a degree.  These parts are called minutes. \nEach minute is split up into 60 parts, each part being 1/60 of a minute. These parts are called seconds. \n\nThe size of an angle could be stated this way: 40 degrees, 20 minutes, 50 seconds.\nHow could you state the above as an angle using common decimal notation? The angle would be this many degrees, (* means times.):\n\n40 + (20 * 1/60) + (50 * 1/60 * 1/60) \n\nThat is, we have 40 full degrees, 20 minutes - each 1/60 of a degree, and 50 seconds - each 1/60 of 1/60 of a degree.\n\nWork that out and you will get a decimal number of degrees.  It's 40.34722...\n\nGoing the other way is a bit more difficult. Suppose we start with 40.3472 degrees. Can we express that in units of degrees, minutes, and seconds?\n\nWell, first of all there are definitely 40 degrees full degrees. That leaves 0.3472 degrees.\n\nSo, how many minutes is 0.3472 degrees? Well, how many times can 1/60 go into 0.3472? Here's the same question: What is 60 times 0.3472?  It's 20.832. So, there are 20 complete minutes with 0.832 of a minute remaining.\n\nHow many seconds are in the last 0.832 minutes. Well, how many times can 1/60 go into 0.832, or what is 60 times 0.832? It's 49.92, or almost 50 seconds.\n\nSo, we've figured that 40.3472 degrees is almost exactly equal to 40 degrees, 20 minutes, 50 seconds.\n\n(The only reason we fell a bit short of 50 seconds is that we really used a slightly smaller angle in this second half of the calculation explanation.  In the original angle, 40.34722... degrees, the decimal repeats the last digit of 2 infinitely, so, the original angle is a bit bigger than 40.3472.)
889937
A triangle has 180 degrees.  a right angle is 90 degrees.  a triangle has 3 angles.
50989
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.
86738
The angles all add up to 180 degrees.\n\nIf you know the lengths of all the sides you can use the "Law of Tangents" to find all the angles.  This is advanced geometry and Trigonometry, so rather than type, I am including a link to a pretty good explanation.\n\nhttp://answers.google.com/answers/threadview?id=38131
953427
Sides Name \nn N-gon \n3 Triangle \n4 Quadrilateral \n5 Pentagon \n6 Hexagon \n7 Heptagon \n8 Octagon \n10 Decagon \n12 Dodecagon \n\nNames for other polygons have been proposed.\n\nSides Name \n9 Nonagon, Enneagon  \n11 Undecagon, Hendecagon \n13 Tridecagon, Triskaidecagon \n14 Tetradecagon, Tetrakaidecagon \n15 Pentadecagon, Pentakaidecagon \n16 Hexadecagon, Hexakaidecagon \n17 Heptadecagon, Heptakaidecagon \n18 Octadecagon, Octakaidecagon \n19 Enneadecagon, Enneakaidecagon \n20 Icosagon \n30 Triacontagon \n40 Tetracontagon \n50 Pentacontagon \n60 Hexacontagon \n70 Heptacontagon \n80 Octacontagon \n90 Enneacontagon \n100 Hectogon, Hecatontagon \n1,000 Chiliagon \n10,000 Myriagon \n\nTo construct a name, combine the prefix+suffix\n\nSides Prefix \n20 Icosikai... \n30 Triacontakai... \n40 Tetracontakai... \n50 Pentacontakai... \n60 Hexacontakai... \n70 Heptacontakai... \n80 Octacontakai... \n90 Enneacontakai... \n + Sides Suffix \n+1 ...henagon \n+2 ...digon \n+3 ...trigon \n+4 ...tetragon \n+5 ...pentagon \n+6 ...hexagon \n+7 ...heptagon \n+8 ...octagon \n+9 ...enneagon
851122
An easy way to do this is to remember that the *exterior angles* of a polygon always add up to 360°.\n\nSo one exterior angle of a regular hexagon will be 360°/6 = 60°\n\nThe interior angle is always the supplement (180° - 60°), so it will be 120°.  Since there are 6 angles that means 720°.\n\nAnother general formula for the sum of the interior angles is:\n(n-2) * 180°, where n is the number of sides.  In your case you have 6 sides, so 4 * 180° = 720°.\n\nA final way to figure the sum of the interior angles is to build a table.  Each time you add 180°.\n\nTriangle = 3 sides = 180°\nSquare = 4 sides = 360°\nPentagon = 5 sides = 540°\nHexagon = 6 sides = 720°\n...\n\nAny way you figure the answer, you should get 720°.
471637
1. 1080 degrees\n\n2. 1800 degrees
280903
Generally you create a regular hexagon by drawing a circle and reporting on the circumference six consecutive segments of the same lenght of the circle radius. \nThe side of a regular hexagon is in fact equal to the radius of the external circle. You can use compassus to do a sharp work.\n\nAnyway, by this property, it comes out that every triangle from the centre of the hexagon to one of its sides is an equilateral triangle; so all its angles are 60°.\nEach internal angle of the hexagon is made by the sum of two of these 60° angles, so each internal angle of a regular hexagon is 120°.\n\nThe general formula for the angles of a regular n-agon is:\n\n(n-2)*180°/n
141322
3: Triangle (Common) or Trigon (Greek)\n4: Square (Common) or Tetragon (Greek)\n5: Pentagon\n6: Hexagon\n7: Heptagon\n8: Octagon\n9: Nonagon (Common) or Enneagon (Greek)\n10: Decagon\n11: Undecagon (Common) or Hendecagon (Greek)\n12: Dodecagon\n13: Triskaidekagon\n\n<<There do not exist greek Prefixes for 14-19>>\n\n20: Icosagon\n21: Icosakaihenagon\n\nUsually people don't use these for numbers above 12, except for 20.
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Naming a polygon by its number of sides requires that we know the appropriate Greek prefixes along with some rules for their use.\n       For polygons with 3 through 20 sides, simply add "gon" to the prefixes at the left (although a trigon is more commonly called a triangle and a tetragon, a quadrilateral!). \n       For more than 20 sides, we "construct" the name by using so-called combining prefixes:\n              3 = tri \n4 = tetra \n5 = penta \n6 = hexa or sexa \n7 = hepta \n8 = octa \n9 = nona or ennea \n10 = deca \n11 = undeca or hendeca \n12 = dodeca \n13 = triskaideca \n14 = tetradeca \n15 = pentadeca \n16 = hexadeca \n17 = heptadeca \n18 = octadeca \n19 = enneadeca \n20 = icosa \n3 - 99 SIDES\nTo "construct" a name, we start with the prefix for the tens digit, follow it by "kai" (the Greek word for "and"), then follow it with the prefix for the units digit, and finally add "gon."\nExample: A 35-sided polygon is called a "triacontakaipentagon."\n\n30           and        5              gon \ntriaconta    kai       penta           gon\n \n100 - 999 SIDES\nFor numbers from 100 to 999, we need one more combining prefix and another rule.\n\nTo "construct" the name, we start with the prefix for the hundreds digit taken from the "Ones Digit" table above, follow it by "hecta," then proceed as before.\n\nExample: A 672-sided polygon is called a "hexahectaheptacontakaidigon\n100 = hecta \n600            70           and    2    gon\n hexa + hecta  heptaconta   kai    di   gon\n\nI think its enough. Satisfied!
917109
for a polygon with n sides, the sum of all interior angles would be 180*(n-2) degrees.\n\nSo a nonagon would be 180*(9-2) = 180*7 = 1260 degrees\nan 11-agon would be 180 * (11-2) = 1620 degrees
667352
octagons have 8\npolygons with "x" sides will have "x" axes of symmetry
16578
6\nSee http://en.wikipedia.org/wiki/Tilings_of_regular_polygons
643430
7 gon is known as heptagon.\n\nremember this : one exterior angle of polygon=\n                               360/(sides of polygon)\n          thus for heptagon: one exterior angle=360/7\n                                               =51.428 deg\ntotal sum of exterior angles=  360 degrees
1036046
1) 180 degrees\n2) 34678900\n3) 10^10\n4) 4.026 * 10^6\n5) 702600