How to decide which sides is the base of isosceles triangle?

Expert replies

[email protected]: Newbie | Next Rank: 10 Posts; Posts: 1; Joined: Mon Aug 04, 2014 7:54 pm

by [email protected] » Mon Aug 04, 2014 8:00 pm

When the Gmat mentions that ABC is isoscelens triangle, How to decide which sides is the base of isosceles triangle? Or we can not make a conclusion?

Thanks for your help

Like this post

Source: Beat The GMAT — Problem Solving | Mon Aug 04, 2014 8:00 pm

GMATGuruNY: GMAT Instructor; Posts: 15539; Joined: Tue May 25, 2010 12:04 pmFollowed by: 1906 members; Location: New York, NY; Thanked: 13060 times; GMAT Score:790

by GMATGuruNY » Mon Aug 04, 2014 8:13 pm

Any side of a triangle can be deemed the base, and each base has a corresponding height.
For practice with this concept, check here:

https://www.beatthegmat.com/geometry-hel ... 17047.html
https://www.beatthegmat.com/geometry-t271788.html
https://www.beatthegmat.com/need-to-unde ... 68314.html

Private tutor exclusively for the GMAT and GRE, with over 20 years of experience.
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.

As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.

For more information, please email me (Mitch Hunt) at [email protected].
Student Review #1
Student Review #2
Student Review #3

Like this post

GMAT/MBA Expert

[email protected]: Elite Legendary Member; Posts: 10392; Joined: Sun Jun 23, 2013 6:38 pmFollowed by: 511 members; Location: Palo Alto, CA; Thanked: 2867 times; GMAT Score:800

by [email protected] » Mon Aug 04, 2014 10:03 pm

Hi iambillgate2,

You mentioned Isosceles triangles specifically, so when you say "the base", do you mean "the side that does NOT match the other 2 sides?"

An Isosceles triangle does not necessarily "point up", so you have to be open to the idea that the base of the triangle is one of the 2 matching sides.

When a GMAT question mentions an Isosceles triangle, it may tell you which 2 sides are the Isosceles sides, but it may try to test your understanding of Isosceles triangles by giving you OTHER pieces of information (e.g. angles, perimeter/area, etc.) to see if you can figure out which 2 sides are Isosceles.

GMAT assassins aren't born, they're made,
Rich

Contact Rich at [email protected]

Like this post

GMATinsight: Legendary Member; Posts: 1100; Joined: Sat May 10, 2014 11:34 pmFollowed by: 24 members; Location: New Delhi, India; Thanked: 205 times

by GMATinsight » Tue Aug 05, 2014 9:59 am

[email protected] wrote:When the Gmat mentions that ABC is isoscelens triangle, How to decide which sides is the base of isosceles triangle? Or we can not make a conclusion?

Thanks for your help

CONCEPT : Any Side of the triangle can be considered as Base and for a chosen base the height is the perpendicular distance between the base and the third vertex of the Triangle

"GMATinsight"Bhoopendra Singh & Sushma Jha
Most Comprehensive and Affordable Video Course 2000+ CONCEPT Videos and Video Solutions
Whatsapp/Mobile: +91-9999687183 l [email protected]
Contact for One-on-One FREE ONLINE DEMO Class Call/e-mail
Most Efficient and affordable One-On-One Private tutoring fee - US$40-50 per hour

Like this post

Post new topic Post Reply

• Page 1 of 1

GMAT Course Reviews

559 reviews

1168 reviews

431 reviews

359 reviews

147 reviews

5/5

5 Star (560 Reviews)

"Target Test Prep is the closest to the official version of the GMAT exam, about 99% accuracy in terms of the quality and quantity of information. The course has excellently created singular sets of focused lessons and tests for every possible topic that one could come across in the official GMAT exam."

"The TTP course maximizes the efficiency of the time you spend studying. It will take time and effort but I could almost guarantee that if you complete the course exactly as it is laid out you will get an amazing score. They also have a very responsive team willing to help with any questions you might have."

"TTP has two things that I think no other test prep company offers: A teaching approach that reinforces understanding and an attitude that will give you the mental preparedness needed to succeed on the test. TTP gives you a deep understanding of the concept you need to know while teaching you how to think."

Write a Review