Find all School-related info fast with the new School-Specific MBA Forum

It is currently 05 Jul 2015, 00:04

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

I just want to share a rule about the triangle. I hope most

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Director
Director
User avatar
Joined: 14 Jan 2007
Posts: 779
Followers: 2

Kudos [?]: 76 [0], given: 0

I just want to share a rule about the triangle. I hope most [#permalink] New post 29 May 2007, 09:54
I just want to share a rule about the triangle. I hope most of you already know about it.

The area of the triangle, which has the midpoints of the sides of some triangle x as vertices is the one fourth of the area of triangle x.

Proof:
Say the big triangle is - triangle x
small triangle is - triangle y

the area of the triangle x = sqrt[s(s-a)(s-b)(s-c)] where s = semi perimeter of the triangle x = (a+b+c)/2
semi perimeter of triangle y will be s/2
so area of the small triangle = 1/4 of the area of triangle x

Hope it helps.
Manager
Manager
User avatar
Joined: 13 Feb 2007
Posts: 63
Followers: 1

Kudos [?]: 1 [0], given: 0

 [#permalink] New post 29 May 2007, 10:17
the formula used above is heron's formula, no?
  [#permalink] 29 May 2007, 10:17
    Similar topics Author Replies Last post
Similar
Topics:
3 Experts publish their posts in the topic Is there a rule about area of a triangle in a circle? thinkblue 6 19 Apr 2009, 20:27
Experts publish their posts in the topic Which of the following about triangle must be true? I. If a arjtryarjtry 10 31 Jul 2008, 20:06
Just when I thought I was confortable with the rules MBAlad 13 13 Dec 2006, 19:34
I am a little unsure about the rule for which denominator to believe2 6 13 Dec 2005, 06:43
I just wanted to extend a thank you to everyone in the Math bsmith75 5 13 Oct 2005, 12:13
Display posts from previous: Sort by

I just want to share a rule about the triangle. I hope most

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.