Need Help with Geometry and Set/Venn Diagram

[humtum]

Hello All,

I might be posting more often here as I find this forum to be most suitable to hang out and find the valuable information.

I have just started my GMAT prep. and I am planning to appear sometime in late may or mid june 2006. Please someone suggest me any url from this forum or elsewhere where I can find basic-to-advance knowledge in Geometry and Set/Venn Diagram area.

I need to get my Geometry and Set/venn Diagram Concept refreshed. It's long time since I am required to really use all those in day-to-day working. Someone please help..guide me and get me going.

[beatthegmat]

Check out this post: https://www.beatthegmat.com/viewtopic.php?t=75

It has some information related to set theory--it's a start.

Best of luck!

[humtum]

I like that material..so kewl so helpful..

Now waiting for similar material/link for Geometry .

Thanks for helping

[beatthegmat]

For a good Geometry review, I would actually recommend picking up the following books:

• Kaplan GRE & GMAT Math Workbook

It has a pretty good review of Geometry basics. In my opinion though, the best way to prep is to practice OG geometry problems. The GMAT tests the same question patterns over and over again. With enough iterations of studying OG, you will likely be well prepared for Geometry on the real test.

Best of luck!

[humtum]

Thanks a lot for guiding me..I am surely working on OG geometry problems and now look for this suggested KAPLAN book...

[chix475ntu]

For Geometry and Venn diagrams, if you understand the question fully and know what to do then proceed with the steps using the formulas.
Else draw the diagrams.
eg:
Venn diagrams - draw circles depending on the number of groups

Geometry figures - draw the figure - traingle/square etc .. usually GMAT will not give the figures to scale - that means a seemingly right traingle might not be a right traingle, so you will draw a traingle which is not right traingle so that even though you are in a hurry, you wouldnt make the mistake of taking the traingle as right traingle.

Points, axes - draw x,y axis and if points are given then draw the points, or else variables are given then see where can be the variables. If line is given, draw the line. You dont have to be exact, just draw something so that you wont waste valuable time always thinking about the figure.

DS: One major mistake everyone willl do is assume something. The above process will definetely try to avoid such situation
For example:
A quadrilateral, one side is 40 and a adjacent side is 30. Is it a parallelogram?
1). The angle formed by two sides mentioned is right angle.
2). Two diagonals are equal.

Solve the above problem, let me know how you worked. This problem has got good fundamentals about goemetry esp quadrilaterals.

By practise, one can just solve the problem without ever using a diagram in tough questions as well. But that needs practise and there is no harm to paint a picture.

Let me know if you want specific info on anything.

-Chix