In this module, you'll learn all of the concepts, techniques and strategies needed to answer geometry questions on the GRE. In particular, this module covers:

 Lines and angles Isosceles and equilateral triangles Right triangles Special triangles Similar triangles Quadrilaterals Circles: area & circumference Circles: sectors & arcs Circles: tangent lines Circles: inscribed angles Cylinders Surface area & volume

### Two ways to prepare

Beneath most of the video lessons below, you’ll find a Reinforcement Activities box containing practice questions that are specifically related to the concepts covered in that lesson (e.g., the lesson on circles). With this lesson format, you have two study options:

• Watch the video lesson first and then reinforce your learning by answering several related questions, or…
• Tackle the practice questions first and watch the lesson only if you need help with the concepts the practice questions test

For more on this learning strategy, read the “How to Beat the GRE” section of our course overview page.

## GRE GEOMETRY VIDEOS

• 1. Lesson: Lines and Angles (7:19)
• 2. Question: 3x-5 (2:10)
• 3. Lesson: Triangles - Part I (5:55)
• 4. Question: Comparing Side Lengths (1:24)
• 5. Question: x in terms of y (3:26)
• 6. Lesson: Assumptions in Geometry (4:28)
• 7. Lesson: Geometry Strategies - Part I (1:07)
• 8. Lesson: Triangles - Part II (8:16)
• 9. Question: Bit of Everything (1:46)
• 10. Lesson: Right Triangles (9:18)
• 11. Question: Rectangle’s height (2:10)
• 12. Question: 3-D Diagonal (3:02)
• 13. Lesson: Special Right Triangles (6:42)
• 14. Question: 3 Triangles (3:53)
• 15. Lesson: Similar Triangles (4:28)
• 16. Question: Triangles with Intersection (2:16)
• 18. Lesson: Polygons (3:15)
• 19. Lesson: Circles (4:47)
• 20. Question: Radius vs. Diameter (2:28)
• 21. Question: Circle Area with Triangle (2:39)
• 22. Lesson: Pieces of Pi (3:37)
• 23. Question: Intersection and Arc (1:54)
• 24. Lesson: Circle Properties (3:36)
• 25. Question: Circle with Parallel Lines (3:00)
• 26. Lesson: Volume and Surface Area (6:44)
• 27. Lesson: Units of Measurement (1:54)
• 28. Lesson: Geometry Strategies - Part II (1:54)
• 29. Question: Areas of Triangles and Circles (1:15)
• 30. Question: Value of x (1:33)
• 31. Question: ABC Perimeter (1:09)
• 32. Question: Tangent Line (2:08)
• 33. Question: Triangle and Line (1:42)
• 34. Question: Tilted Triangle Area (2:13)
• 35. Question: Possible Lengths of KM (0:42)
• 36. Question: Volume of Sphere (1:35)
• 37. Question: Parallelogram Perimeter (2:16)
• 38. Question: Octagon Angle (1:30)
• 39. Question: Diagonal of a Square (1:22)
• 40. Question: Triangle with Variable Angles (1:44)
• 41. Question: Triangles with Shared Vertex (1:40)
• 42. Question: Circle in the x-y Plane (2:33)
• 43. Question: Cylinder Surface Areas (1:37)
• 44. Question: Area of triangle (2:37)
• 45. Question: Value of w (3:06)
• 46. Question: Diagonal of Rectangle (2:56)
• 47. Question: Triangle in the x-y Plane (1:50)
• 48. Question: Intersecting Circles (3:44)
Total viewing time for the GRE Geometry module: 149 minutes.

## Practice from the Official Guide

Practice the skills and GRE-specific strategies you learned in this module by answering the following questions from the Official Guide to the GRE (3rd edition):

• 116(4), 130(2), 156(2), 157(7), 159(12), 161(3), 163(11), 164(13), 165(1), 166(4), 168(10-11), 280(1-7), 281(8-10), 282(11-12), 283(13-14)

Here are the related questions in the Official Guide to the GRE (1st or 2nd edition):

• 111(4), 125(2), 146(2), 147(7), 149(12), 151(3), 153(11), 154(13), 155(1), 156(4), 158(11), 259(1-3), 260(4-9), 260(10), 261(11-13), 262(14)

Note: The above practice questions are listed in the form page#(question#). So, for example, 111(4) represents question #4 on page 111.