Go to navigation
It is currently Mon Dec 05, 2016 10:27 am

All times are UTC




Post new topic Reply to topic  [ 4 posts ] 
Author Message
 Post subject: nfer 11C
PostPosted: Tue Jun 23, 2009 10:37 pm 
Offline

Joined: Sun Jun 21, 2009 2:27 am
Posts: 21
CAN ANYONE EXPLAIN 30 QUESTION OF 11C IN NFER RELATING TO ANGLES, I AM GETTING CONFUSED


Top
 Profile  
 
 Post subject:
PostPosted: Wed Jun 24, 2009 8:02 am 
In regular shapes, which these all are, all sides and all angles are equal.

The more sides, the bigger the angle. That would the quickest explanation for a young child.

More thoroughly:

Equilateral triangle: 60 degrees each (180 divided by 3) A
Square : 90 degrees each (360 divided by 4) D
Pentagon : 108 degrees each (540 divided by 5) C
Hexagon : 120 degrees each (720 divided by 6) B
Heptagon : 128.5 deg. each (900 divided by 7)
Octagon : 135 degrees each (1080 divided by 8) E

As you can see, with each new side, the sum of the angles goes up by 180 degrees.

Thus you have A D C B E, so C is in the middle.

Hope this is the right question. This is the multiple choice version of that paper.


Top
  
 
 Post subject:
PostPosted: Mon Jun 29, 2009 9:38 pm 
Offline

Joined: Sun Jun 21, 2009 2:27 am
Posts: 21
yes thanks


Top
 Profile  
 
 Post subject:
PostPosted: Mon Jun 29, 2009 10:04 pm 
Offline

Joined: Mon Feb 12, 2007 1:21 pm
Posts: 11936
It's easier to remember that the external angles of any polygon add to 360.

So a regular pentagon has 5 exterior angles 360 divided by 5 = 72

Interior angle = 180 - 72 =108


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 

All times are UTC


Who is online

Users browsing this forum: Bing [Bot] and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
CALL 020 8204 5060
   
Privacy Policy | Refund Policy | Disclaimer | Copyright © 2004 – 2016