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GRE Geometry Concepts, Formulas and Questions
GRE Geometry is one of the important sections in GRE Quantitative Reasoning. 15% of the questions in GRE Quant are focused on GRE Geometry questions. GRE Maths Geometry has 20 questions in 2 sections. Candidates need to complete the section in 35 minutes. The GRE Geometry includes concepts including- lines and angles, triangles, quadrilateral, circles, 3D Geometry and Coordinate Geometry. Candidates are advised to follow the GRE exam pattern to gather an adequate knowledge of the types and number of questions.
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Overview of GRE Geometry Concepts
GRE Geometry concepts include lines and angles, triangles, 3D Geometry, Quadrilateral circles and coordinate geometry. All of these include further concepts and properties of their own. The average score in GRE Quant is 152.57 out of 170. The following table provides an overview of the GRE Geometry concepts.
| GRE Concepts | Items included in GRE Concepts |
|---|---|
| Lines and Angles |
|
| Triangles |
|
| Quadrilateral |
|
| Circles |
|
| 3D Geometry |
|
| Coordinate Geometry |
|
GRE Geometry Formulas and Concepts
The GRE Geometry concepts have certain formulas and rules that need to be followed. GRE Geometry Math problems need to be solved following the formulas and rules for each figure. Candidates need to follow these formulas to achieve a Good GRE Score. The properties, formulas and rules of each concept have been given below.
GRE Geometry Lines
A line can be defined as a set of infinite points. There are different types of lines which are as follows:
- A straight line that has no end point and extends in both directions.
- A curve line can seem to extend from one point to another changing direction constantly.
- A line segment can be defined as two points having definite end points.
There are certain concepts that need to be considered in GRE Geometry problems for lines and angles.
Concept
There are certain concepts in lines and angles which need to be considered as follows:
- A straight line is equal to 180 degrees
- Two lines that never intersect but has the same slope are parallel lines
- Corresponding angles are equal in measure.
- Alternate interior angles are equal in measure.
- Alternate exterior angles are equal in measure.
- Consecutive interior angles add up to 180 degrees.
- An acute angle is an angle less than 90 degrees.
- An obtuse angle refers to an angle between 90 and 180 degrees.
- A right angle implies 90 degrees and is usually signified by a small square:
- The symbol ∠ is often used to denote an angle. For example: angle A=∠A.
- Two lines that intersect at 90-degree angles are perpendicular to each other:
- When two lines intersect, four angles are created:
- Opposite angles are equal in measure (∠A=∠B, ∠C=∠D).
- Adjacent angles add up to 180 degrees (∠A+∠D=180, ∠A+∠C=180, ∠B+∠D=180, ∠B+∠C=180).
- When two parallel lines intersect eight angles are created
- Corresponding angles are equal in measure.
- Alternate interior angles are equal in measure.
- Alternate exterior angles are equal in measure.
- Consecutive interior angles add up to 180 degrees
GRE Geometry Triangles
GRE Geometry includes concepts of triangles. GRE triangle questions are based on different types of triangles including isosceles, equilateral, right, obtuse, acute and scalene. GRE Geometry problems need to be solved based on a set of concepts and formulas.
Concepts
The concepts of GRE special triangles can be explained as follows:
- Equilateral triangle: all sides of the triangle are equal and each angle is of 60 degrees each
- Isosceles triangle: two sides are equal in length and two opposite angles are equal in measure
- Scalene: all sides are different in length and all angles are different in measure
- Right angle triangle: one of the angles of the triangle is 90° and the longest side is called hypotenuse. The sum of all sides is 180°
Formulas
The formulas in GRE geometry for triangles include the area of the triangle and the Pythagorean Theorem as follows:
Area of Triangle:
A= 1/2 bh
Where b is base and h is height
Pythagorean Theorem:
The theorem states that “sum of the squares of the base and height is equal to the square of the hypotenuse for a right angled triangle”.
In the above image, 
Where c is the hypotenuse, a is the base and b is the perpendicular height.
GRE Geometry Quadrilateral
GRE Geometry concepts include quadrilaterals of four five types including square, rectangle, rhombus, trapezium and parallelogram. The concepts and formulas are given below for the solving quadrilateral based GRE Geometry problems:
Concepts:
- Square: all the four sides are equal and the angles are at 90°. The diagonals bisect each other at 90°.
Formula:
Area of a square = 
Perimeter of a square= 
- Rectangle: opposite sides of the rectangle are equal and the angles are 90°. The diagonals bisect each other but do not meet at right angles
Formula
Area of rectangle = 
Perimeter of rectangle = 
- Parallelogram: the opposite sides and angles are equal in a parallelogram. The diagonals bisecting each other do not form right angles
Formula
Area of rectangle = 
Perimeter of rectangle = 
- Rhombus: all sides are equal in length and opposite sides are parallel to each other. The diagonals bisecting are perpendicular. Adjacent angles are supplementary implying sum of the angles is 180°
Formulas
Area of Rhombus = 
Perimeter of Rhombus: 
- Trapezium: the base and opposite sides are parallel to each other. The angles, sides and diagonals are not congruent.
Formulas
Area of Trapezium = 
Where L1 is length 1, L2 is length 2 and h is height.
Perimeter: sum of the length of all sides
GRE Geometry Circles
A circle means a set of points equidistant from a centre on a plane surface. A circle’s perimeter is called the ‘circumference of the circle’. The concepts and formulas would help in solving GRE Circle problems.
Concepts:
- Radius: the line segment joining the centre to any point on the circle.
- Chord: the line segment joining any two points on the circle.
- Diameter: the line segment joining any two points of the circle passing through the centre.
Formulas
Diameter = 
Area = 
Circumference = 2
3D GRE Geometry Concept
3D geometry in GRE Math Problems mainly deals with cube, cuboid, cylinders, cones and hemisphere. The area and volume of the figures have been given below.
- Cuboid: the volume covered by 6 rectangles is a cuboid
Formulas:
Total surface area = 
Lateral surface area = 2height (length + width)
Volume = 
Length of the longest diagonal = 
- Cube: the volume of a cube is covered by all 6 sides as squares
Formulas:
Volume = 
Lateral surface area = 
Total surface area =
Length of diagonal of cube = 
- Cylinder: a 3 dimensional solid figure with 2 circular and parallel faces connected by a curved surface.
- Major dimensions are radius of base and height
Formulas
Volume = 
Lateral Surface Area = 2
- Cone: 3 dimensional shape which has a circular base and narrows to one point
- The height, radius and slant height are the key measurements
Formulas:
Slant height = 
Volume of a cone = 
Total surface area = 
GRE Coordinate Geometry
The calculations in coordinate geometry are done in coordinate plane axes for GRE Geometry questions. The key component in Coordinate Geometry in the coordinate axis is the number line.
Concepts
A point on the coordinate plane is represented with an ordered pair (x, y) where x is the abscissa and y is the ordinate. The coordinate plane is divided into four quadrants. Candidates need to consider following the GRE Geometry practice problems for preparing for the exam. The formulas to solve this part of GRE Geometry problems are as follows.
Formulas
Distance, 
Theorem: 
Tips for GRE Geometry
Candidates need to follow the GRE Preparation tips in order to practice for their GRE exam. The following tips can be considered helpful for the candidates.
- Candidates need to memorise the key concepts and formulas in order to solve the GRE Geometry problems
- Candidates need to make flashcards as part of their preparation for the test
- Candidates need to follow effective GRE Geometry Practice Questions to be aware of the types of questions that they might encounter
GRE Geometry Practice Papers
| GRE Geometry Practice Test 1 | GRE Geometry Practice Test 2 |
| GRE Geometry Practice Test 3 | GRE Geometry Practice Test 4 |
| GRE Geometry Practice Test 5 | GRE Geometry Practice Test 6 |
GRE 2024 : 6 Answered QuestionsView All
Ans. In case you are enquiring about the CAT percentile let me clarify that ISB Hyderabad does not take into consideration CAT scores. It accepts GMAT/GRE scores only. Most importantly, the ISB Shortlisting process is profile-based. This means even with a lower percentile you can manage to get shortlisted provided you have an excellent profile. There is no fixed cutoff for GMAT. However, a 700+ GMAT score isn't a must-have for ISB if your application is strong in other areas. According to an ISB spokesperson, candidates were admitted to the 2021 cohort with scores as low as 580, and as high as 780. So the GMAT score range for ISB is 580-780. Read more
Ans. ISB Hyderabad accepts both examination scores. So, you can opt for either of GMAT or GRE. Your chances of selection or rejection will remain the same. Go through the examination pattern and syllabus and choose the one in which you feel that you will be able to score better. Ultimately having a good score is what matters during admission. As per the recent trends, ISB Hyderabad cutoff for GMAT is 600, while for GRE it is 311. Read more
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Ans. Of the two entrance exams, GMAT and GRE, the former is a better option. ISB Hyderabad has recently started accepting GRE scores. This doesn’t mean that taking the GRE is a bad idea. Many business schools apart from ISB are now accepting GRE scores. The best part is that ISB won’t be converting your GRE scores to GMAT for comparison during the MBA admissions. GRE is suitable for students who are considering other PG options apart from MBA like MS or MA. For someone who is sure of their career in an MBA, the GMAT is a better choice because GRE is much more dynamic. GMAT shows your commitment to MBA and thereby increases your chances of admission in comparison to GRE which shows that you are open to various options. ISB Hyderabad prefers GMAT over GRE also because the former is a more quantitatively challenging exam than the latter. Certain firms may ask for your GMAT score before shortlisting you for your interview. These include the biggest firms in the corporate world like McKinsey So from these points, we can safely conclude that GMAT is a better option for MBA students provided that you are sure of your course. Read more
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*The article might have information for the previous academic years, which will be updated soon subject to the notification issued by the University/College
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