# GMAT Geometry

GMAT geometry can seem tricky until you get the right help! On this page you'll find everything you need to know about GMAT geometry before test day.

## Most Popular GMAT Geometry

If you're strugggling with GMAT circle concepts, don't fear! In this post, we'll teach you all the basics, from terminology to essential formulas.
Stuck trying to find the height of triangles while studying for GMAT? You'll only have to know how to find the height for right triangles on exam day.
GMAT coordinate geometry problems stumping you? Try your hand at these problems, then read through Magoosh's expert answers and explanations.
What's the difference between inscribed vs circumscribed polygons? Find out everything you need to know in this article!
Keep missing GMAT circle problems? Work through Magoosh's set of expert-designed questions and explanations to brush up on your knowledge before test day!
How does the GMAT test Cartesian quadrants? Read through Magoosh's expert explanations, then try your hand at practice problems to test your knowledge.

## Most Recent GMAT Geometry

GMAT geometry can be tough for those rusty on the math concepts. Try these GMAT Geometry practice problems to see what you need to work on.

Here are four practice problems involving similar figures. 1) In the figure, KLMN is a square, and angle KJN = 45°.  Find the area of figure JKLMN. 2) In the diagram, HJLM is a square, and GH = 10.  Find the area of trapezoid GHJK. 3) In the diagram, BD = 5, CD = 10, […]

1) The line shown passes through the point (A, 30).  Which of the following is closest to the value of A? (A) 58 (B) 59 (C) 60 (D) 61 (E) 62 2) Line A has a slope of and passes through the point (–2, 7).  What is the x-intercept of Line A? 3) Line J […]

Hello! 🙂 This week, I’m solving a tough challenge question that you might have seen on our blog if you visit often! This challenge question draws on a whole host of geometry concepts and formulas, so it’s a great test for how much of geometry you really know. And just in case the board […]

For more information on Coordinate Geometry on the GMAT, see these articles: 1) Quadrants in the x-y Plane 2) Special Properties of y = x 3) Distance between Two Points 4) Slopes 5) Midpoints and Parallel & Perpendicular lines   Here are five new practice problems on these topics. 1. The center of circle Q […]

GMAT expert Mike McGarry discusses the topic of angles and parallel lines on the GMAT.
Struggling with similar shapes when studying for the GMAT? Mike breaks down the rules for you.

In the first three articles in this series on GMAT probability questions, I discussed the AND and OR probability rules,  “at least” probability questions, and probability questions that involve counting.  This post covers relatively rare kind of probability question not covered in the first three posts: geometric probability questions.  First, a few challenging practice GMAT […]

Helpful tips on how to divide up circles on the GMAT. Covering arc lengths, sectors, proportions, and of course pi.

The Pythagorean Theorem is one of the most remarkable theorems in all of mathematics.  It has a treasure trove of ramifications up its sleeve, any one of which could provide you with invaluable help on the GMAT Quantitative section.  For example, consider this practice problem. 1) Consider the following three triangles I. a triangle with […]

First, a few practice questions. 1) Line A has the equation 3x + y = 7.  Which of the following lines is perpendicular to Line A? (A) y = 3x + 4 (B) y = –3x – 6 (C) y = (1/3)x – 1 (D) y = (–1/3)x + 2 (E) y = (–7/3)x – […]

Here are a set of practice GMAT questions about the Cartesian plane. 1) What is the equation of the line that goes through (–2, 3) and (5, –4)? (A) y = –x + 1 (B) y = x + 5 (C) y = –3x/7 + 15/7 (D) y = –4x/3 + 1/3 (E) y = […]

Learn the most common solutions to the Pythagorean Theorem There aren’t many numbers you need to memorize for success on the GMAT Quantitative section, but knowing a few key Pythagorean triplets will save you a ton of time.  First, try these GMAT practice question: remember: no calculator! 1) In right triangle ABC, BC = 48 […]

How do you find the distance between two points in the x-y plane?  First, try these practice questions. 1) What is the distance from (–7, 2) to (5, –3)? (A) 10 (B) 11 (C) 12 (D) 13 (E) 14 2) Consider the three points in the x-y plane: P = (8, 4), Q = (6, […]

First, try these practice questions:   1) Every length in a 45°-45°-90° triangle increases by 20%.  By what percent does the area of the triangle increase? (A) 20% (B) 25% (C) 40% (D) 44% (E) 80% 2) At a certain pizza parlor, the diameter of a large pizza is 40% larger than the diameter of […]

Learn the geometry properties of this important category of shapes and be ready for GMAT Quant questions about them!    Definition A polygon is a closed 2D shape with all straight sides.  Every side has to be a line segment.  The following are all polygons: There must be at least three sides, but there is […]