http://www.pubquizhelp.com/sci/polygon.html
No. ofsides Polygon Name Internal Angle
3 Triangle 60°
4 Square or Quadrilateral 90°
5 Pentagon 108°
6 Hexagon 120°
7 Heptagon 128.571°
8 Octagon 135°
9 Nonagon or Ennagon 140°
10 Decagon 144°
11 Hendecagon or Undecagon 147.273°
12 Dodecagon 150°
13 Triskaidecagon 152.308°
14 Tetrakaidecagon 154.286°
15 Pendedecagon 156°
16 Hexdecagon 157.5°
17 Heptdecagon 158.824°
18 Octdecagon 160°
19 Enneadecagon 161.053°
20 Icosagon 162°
30 Triacontagon 168°
40 Tetracontagon 171°
50 Pentacontagon 172.8°
60 Hexacontagon 174°
70 Heptacontagon 174.857°
80 Octacontagon 175.5°
90 Enneacontagon 176°
100 Hectagon 176.4°
1000 Chiliagon 179.640°
10000 Myriagon 179.964°
100000 Megagon 179.996°
10100 Googolgon almost 180°

What is an IP Address?

What is an IP Address? (Static IP, Dynamic IP)
An IP address identifies a computer or other device to a network. The basic concept is simple: every device on a network needs to have its own address. that way, data is sent to the right place. There are IP addresses are used by the whole Internet, and others, only used by locally, for example in your home.

Why isn't there One Set of IP Addresses for the Whole World?
It might be nice if every computer had its own IP address. Unfortunately, computers come and go frequently — millions are added, removed, or rearranged every day. It would be impossible for everyone in the world to keep up with the changes. Another reason that local networks use their own addresses is that the Internet ran out of "regular" IP addresses long ago.

To avoid these problems the Internet community does a number of things:

• They use one set of addresses for the whole world. However each local network uses its own addresses. You and your neighbors probably use some of the same IP addresses, but your network doesn't talk directly to your neighbor's without "translating" the addresses, so it's ok.
• Some addresses are used only temporarily. When the computer is turned off, the address is given to someone else.
• They create a secondary address called a subnet mask which changes the way the main IP address is read. (People with simple networks don't need to know much about this.)

Whether for the whole world, or just for your home, an IP address always looks like this (four numbers separated by three periods):

192.168.0.1

The subnet mask has the same format. The subnet masks on your own home network will almost always have exactly these numbers:

255.255.255.0

Don't change the subnet mask without being sure what it does!

You need to keep a record of these IP addresses:

1. The one your ISP gives you. This one is used by the whole world to access your network.
2. The address of your router on your own network. By default NETGEAR sets the router address to 192.168.0.1 or to 192.168.1.1. That's the IP address you type in an Internet browser to log in your router.
3. There are situations where you will need to know IP addresses of other devices in your network.

What's the Difference Between a Static and a Dynamic IP Address?

The IP address from your ISP is assigned one of two ways:

• Set to an IP address which is unchanged for months or years at a time. This is a static IP address.
• Set to an IP which is only good for a limited time, and which is changed according to the policy set by your ISP's DHCP server. This is a dynamic IP address.
  

Because a static IP can be relied on for an indefinite period, some networking software requires a static IP. ISPs usually charge extra for static IPs. Your ISP may not be willing to give their customers static IP addresses at all.

Dynamic IPs are used in large networks where computers are frequently reconfigured, or where a limited number of IP address are available to share between many computers.

How to Convert Your FAT or FAT32 Disk into NTFS

There are two ways to convert your FAT disk to NTFS - during install or after install. During install, you are given the choice to convert your FAT type drive to NTFS (if it is possible). The nice thing about converting to NTFS is that it leaves your present data intact - you do not need to format your hard drive to convert, but if you have nothing of value on the drive, it's a good idea to partition and format anyway, just to get a nice, clean start.

If you decide to forgo converting to NTFS during Setup, you can always convert your drive to NTFS later by using CONVERT.EXE This is a command line utility. To use, simply go to a command prompt and type your drive letter followed by /fs:ntfs. For example, if it's Drive D: you wish to convert, you would type:

D: /fs:ntfs

And again, you won't lose any data by doing this conversion.

Realize, however, that once you convert a drive to NTFS there is no going back to FAT in the same easy way. You will need to reformat to go back.

Different Ways to Lock Windows XP

There are several ways to lock your Windows XP computer, but all of them use the same command line. The method you choose is a matter of personal preference.

(These methods apply to both Windows XP Home and Windows XP Pro.)

1. Via the keyboard
   The easiest way to lock Windows XP is by simply pressing the Windows logo key and the letter L (for Lock) on a Microsoft Natural Keyboard or any other compatible keyboard that includes the Window key. Doing so will pop up the Unlock Computer Password box.
   
2. Via a Shortcut.
   If you don't have a keyboard with a Window key or simply don't like the keyboard method, then here's how you can make a desktop shortcut to lock your computer.
   
   Right click an empty area of your desktop, choose New/Shortcut and enter this line as the command line:
   
   rundll32.exe user32.dll, LockWorkStation
   
   Click Next. Name the shortcut whatever you prefer and click Finish. That's it.
   
   If you'd like to change the icon, just right click the shortcut and go to Properties/Shortcut/Change Icon.
   
3. Via the command line
   The above command line can also be used at a DOS prompt to lock your computer. One simple way you can do it would be by clicking Start/Run, typing CMD and then entering the command and pressing Enter.
   
4. Via a .bat file
   This is similar to a Windows shortcut method. But it's a DOS version. If you've never created a bat (batch) file, but would like to try this method, simply open a new text file (such as with Notepad) and type the following commands:
   
   @echo off
   rundll32.exe user32.dll, LockWorkStation
   cls
   
   Save the file with a .bat extension, such as Lock.bat, and you're done. Double click to make the file run.
   Those are the basic methods to lock XP, but there are some other relating factors of which you should be aware.

Password
It should go without saying that if you don't use a password to log on to your computer, then anyone can access your computer and unlock it. If you want to use the lock feature, then set a password by going to User Accounts in the Control Panel and then click Create Password.

Fast User Switching
Fast User Switching allows multiple login sessions at the same time. Whether you have this feature enabled or disabled will make a big difference in how your locked computer can be accessed and on the behavior of your shortcuts when executed.

If enabled, executing any of the above locking methods will bring up the Welcome screen and other users will be able to log on to the computer, as is the norm for Fast User Switching. So, you really don't get much security at all this way, if your intention is to lock your machine. With Fast User Switching, only your profile is locked, not the ability for other users to log into your system. Any other user can just log on to your computer and use it.

If Fast User Switching is disabled, you will have to enter a password to unlock the computer. Double clicking your shortcut will bring up the Unlock Computer password dialog box. This is the same lock method that Windows NT and 2000 uses.

If you're not sure whether or not you have Fast User Switching enabled or disabled, go to User Accounts in the Control Panel and click the Change the way users log on or off tab. There you will see your status for Fast User Switching.

Welcome Screen
Whether the Welcome screen is enabled or disabled also has an effect on the way your computer can be locked.

If the Welcome screen is enabled, you can also lock your computer in Task Manager (Ctrl+Alt+Delete) by clicking the Lock Computer option in the Shutdown menu list. This option will only appear if the Welcome screen is enabled—without Fast User Switching being enabled.

Note! In order to use Fast User Switching, the Welcome screen must be enabled. You cannot select Fast User Switching if the Welcome screen option is unchecked.

If the Welcome screen is disabled, you can lock the computer by pressing Ctrl+Alt+Delete and then clicking the Lock Computer tab in the Windows Security dialog box that comes up.

BUSINESS GLOSSARY

Website to search meaning for business terms

Below is the link to the website in which you can search meaning for any financial or business term.

http://www.allbusiness.com/3470944-1.html

This website contains:

• Browse by Dictionary of Terms
• Dictionary of Accounting Terms
• Dictionary of Banking Terms
• Dictionary of Business Terms
• Dictionary of Computer and Internet Terms
• Dictionary of Finance and Investment Terms
• Dictionary of Insurance Terms
• Dictionary of Marketing Terms
• Dictionary of Real Estate Terms

BUILDING VOCABULARY

How to build a good Vocabulary ?

The Ten Best Vocabulary Learning Tips.

Step 1. Read, Read, Read!

Most vocabulary words are learned from context. The more words you're exposed to, the better vocabulary you will have. While you read, pay close attention to words you don't know. First, try to figure out their meanings from context. Then look the words up. Read and listen to challenging material so that you'll be exposed to many new words.

Step 2. Improve your context skills.

Research shows that the vast majority of words are learned from context. To improve your context skills pay close attention to how words are used. Doing a search on a word using dejanews.com (for searching newsgroups) will give you many examples of how that word is used in context. Play our Daily Context Vocabulary Quiz.

Step 3. Practice, practice, practice.

Learning a word won't help very much if you promptly forget it. Research shows that it takes from 10 to 20 repetitions to really make a word part of your vocabulary. It helps to write the word - both the definition and a sentence you make up using the word - perhaps on an index card that can later be reviewed. As soon as you learn a new word, start using it. Review your index cards periodically to see if you have forgotten any of your new words. Also, do a search on a word using dejanews.com (for searching newsgroups) to get many examples of how the word is actually used.

Step 4. Make up as many associations and connections as possible.

Say the word aloud to activate your auditory memory. Relate the word to words you already know. For example, the word GARGANTUAN (very large) has a similar meaning to the words gigantic, huge, large, etc. You could make a sequence: small, medium, large, very large, GARGANTUAN. List as many things as you can that could be considered GARGANTUAN: Godzilla, the circus fat lady, the zit on your nose, etc. Create pictures of the word's meaning that involve strong emotions. Think "the GARGANTUAN creature was going to rip me apart and then eat me!"

Step 5. Use mnemonics (memory tricks).

For example, consider the word EGREGIOUS (extremely bad). Think EGG REACH US - imagine we've made a mistake so bad that they are throwing eggs at us and a rotten EGG REACHes US. Such funny little word pictures will help you remember what words mean, AND they are fun to make up. Also, find out which learning style suits you best. Everyone learns differently!

Step 6. Get in the habit of looking up words you don't know.

If you have a dictionary program on your computer, keep it open and handy. America Online and other internet services have dictionaries and thesauruses on their tool bars. Find them and look up any word you are not absolutely sure of. Use a thesaurus when you write to find the word that fits best.

Step 7. Play with words.

Play Scrabble, Boggle, and do crossword puzzles. These and other word games are available for the computer, so you are not dependent on a partner to play. Also, try out the Franklin Electronic Dictionary that features built-in word games.

Step 8. Use vocabulary lists.

For the serious vocabulary student, there are many books that focus on the words most commonly found in standardized tests, such as the SAT and GRE. There are also many interesting word sites on the Internet, many of which will send you a word a day by email.

Step 9. Take vocabulary tests.

Playing games, such as the ones on this site, that test your knowledge will help you learn new words and also let you know how much progress you're making. Offline sources for vocabulary tests include SAT prep books (we recommend "10 Real SATs" by ETS), and the Reader's Digest Wordpower section. For more, check out Amazon.com or your local bookseller.

Step 10.Get excited about words!

Come to appreciate the sometimes- subtle differences between them. Do you know the difference between something that denotes something else and something that connotes something else? If not, go look it up. Learn to say what you really mean and discover the joys of being able to express yourself in writing. Your future can depend on how rich your vocabulary is. A good vocabulary will make a difference on the standardized tests, like the SAT and GRE, that could determine whether or where you go to college. It will also determine the quality of your communication. So be in it for the long pull. Let building your vocabulary be a lifelong proposition. Remember: "In the beginning was the word." Until you have a word for something, it does not exist for you. Name it, and you have made your reality richer.