## Triangles Articles

#### Know the GMAT Code: Mixed-Shape Geometry

Geometry can be fairly straightforward on the GMAT. It can also be seriously convoluted. We’re going to talk about one of the big ways that the GMAT test writers make [...]

#### How to Become a Great GMAT Guesser - Part 2

Welcome to part 2 in our guessing series. You know you’re going to have to guess on the GMAT. The only real questions are when … and how? Last time, we [...]

#### How to Tackle Every Single GMAT Problem (Seriously!) - Part 1

Wouldn’t it be nice to have one common thread among all GMAT problems you’ll ever do, something you do no matter what kind of problem or content area is being [...]

#### Tackling Multishape Geometry on the GMAT

What do you do when you realize a geometry problem has just popped up on the screen? Try this GMATPrep® problem from the free practice test and then we’ll talk about [...]

#### Announcing the New Advanced GMAT Quant Strategy Guide

Exciting news – our Advanced Quant Strategy Guide is finally ready for prime time! We’re also launching a Foundations of Verbal book; click on the link to read about that [...]

#### Grockit GMAT and MBA Admissions Course: Lesson 2, Part 4 – Data Sufficiency

We’re making sections of Grockit’s GMAT Course available to stream online for free! The course is taught by Grockit Founder Farb Nivi and covers the entire GMAT curriculum in 16 [...]

#### Manhattan GMAT Challenge Problem of the Week – 21 Dec 2010

Here is a new Challenge Problem! If you want to win prizes, try entering our Challenge Problem Showdown . The more people enter our challenge, the better the prizes. Question [...]

#### Manhattan GMAT Challenge Problem of the Week – 2 Nov 2010

Here is a new Challenge Problem! If you want to win prizes, try entering our Challenge Problem Showdown . The more people enter our challenge, the better the prizes. Question [...]

#### Beat The GMAT Challenge Question - September 28, 2010

[youtube]http://www.youtube.com/watch?v=OqPv7PEs76I[/youtube] Congrats to Sanitha Alam for being selected as this week’s winner of the Beat The GMAT Challenge Question. Sanitha will receive Premium Access to Beat The GMAT Practice Question as [...]

#### Manhattan GMAT Challenge Problem of the Week – 20 Sept 2010

Here is a new Challenge Problem! If you want to win prizes, try entering our Challenge Problem Showdown . The more people enter our challenge, the better the prizes. As always, [...]

#### Beat The GMAT Challenge Question – August 30, 2010

[youtube]http://www.youtube.com/watch?v=75HQhFpYbmA[/youtube] Congrats to Gurpreet Singh for being selected as this week’s winner of the Beat The GMAT Challenge Question. Gurpreet will receive Premium Access to Beat The GMAT Practice Question as [...]

#### Knewton Brutal Challenge - Week 13 (Math Edition)

There's only one way to get a Knewton t-shirt free today. And that is to answer this question correctly and show your work. In the below diagram, points A and [...]

#### Knewton's Wednesday Brutal Math Challenge - Week 2

We're back. Great job last week. We're once again playing for the new Knewton t-shirt . First person to answer correctly (you must show your work!) gets it. Data sufficiency [...]

#### Manhattan GMAT Challenge Problem of the Week - 11 Mar 10

Welcome back to this week's Challenge Problem! As always, the problem and solution below were written by one of our fantastic instructors . Each challenge problem represents a 700+ level [...]