GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 23 Jul 2018, 10:46

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Geometry Formulas Practice Sheet

Author Message
TAGS:

### Hide Tags

Current Student
Joined: 13 Jul 2009
Posts: 140
Location: Barcelona
Schools: SSE

### Show Tags

26 Jul 2009, 10:36
81
23
Hi all,

I created a template that gather all the geometry formulas that appear on the GMAT (if i missed any please tell!). I use it every week in order to ensure that I remember all of them.

I think it could be helpful for some of you so I decided to share.

The TEMPLATE is the one for practice.

Good luck!
Attachments

Geometry Formulas_template.pdf [44.28 KiB]

Geometry Formulas.pdf [72.21 KiB]

_________________

Performance: Gmat | Toefl
Contributions: The Idioms Test | All Geometry Formulas | Friendly Error Log | GMAT Analytics
MSc in Management: All you need to know | Student Lifestyle | Class Profiles

Founder
Joined: 04 Dec 2002
Posts: 17085
Location: United States (WA)
GMAT 1: 750 Q49 V42
Re: Geometry Formulas Practice Sheet  [#permalink]

### Show Tags

26 Jul 2009, 20:33
2
2
Great resource

Thank you!

_________________

Founder of GMAT Club

Just starting out with GMAT? Start here... or use our Daily Study Plan

Co-author of the GMAT Club tests

Intern
Joined: 15 Nov 2009
Posts: 31
Location: Moscow, Russia
Re: Geometry Formulas Practice Sheet  [#permalink]

### Show Tags

07 Jan 2010, 09:47
Sorry, but on page 2 there is a misprint:
in Arc Measure (Intersecting Secants/Tangents) It must be the difference between arcs measures of AD and BD.
Manager
Status: Labor Omnia Vincit
Joined: 16 Aug 2010
Posts: 72
Schools: S3 Asia MBA (Fudan University, Korea University, National University of Singapore)
WE 1: Market Research
WE 2: Consulting
WE 3: Iron & Steel Retail/Trading
Re: Geometry Formulas Practice Sheet  [#permalink]

### Show Tags

Updated on: 05 Oct 2010, 11:03
Now, what does this mean:

Area of Isosceles Triangle = 1/2[(leg)^2]
(from Geometry Formulas.pdf)

I haven't been able to give myself any convincing explanation of this formula...

Originally posted by rishabhsingla on 11 Sep 2010, 11:27.
Last edited by rishabhsingla on 05 Oct 2010, 11:03, edited 1 time in total.
Math Expert
Joined: 02 Sep 2009
Posts: 47222
Re: Geometry Formulas Practice Sheet  [#permalink]

### Show Tags

11 Sep 2010, 11:42
rishabhsingla wrote:
Now, what does this mean:

Area of Isosceles Triangle = 1/2[(leg)^2]
(from Geometry Formulas.pdf)

I haven't been able to give myself any convincing explanation of this formula...

Well that's because it's not true.

It should be area of isosceles right triangle = 1/2*(leg)^2, simply because area of right triangle equals to 1/2*leg1*leg2, and since in isosceles right triangle leg1=leg2, then this formula becomes area=1/2*(leg)^2.
_________________
Intern
Status: "
Joined: 22 Jan 2011
Posts: 39
Schools: IE- ESCP - Warwick
Re: Geometry Formulas Practice Sheet  [#permalink]

### Show Tags

20 Apr 2011, 19:47
Thanks for this memory sheet, very useful!

However I believe some formulas, details might be added...

Angles of a polygons (n-2)* 180, angles inscribed in a circle (compared to central angle there a section about it in the VERITAS Prep book)

Also I did not see two real IMPORTANT triangles sides ratio:

3:4:5
5:12:13

Good you put the formula for the equilateral triangle (which is not given in the OG and allow you to gain so much time)

I found formula I did not know! Thank you for sharing
Manager
Status: 700 (q47,v40); AWA 6.0
Joined: 16 Mar 2011
Posts: 80
GMAT 1: 700 Q47 V40
Re: Geometry Formulas Practice Sheet  [#permalink]

### Show Tags

23 Apr 2011, 13:59
I'd also add one more element to Coordinate geometry. The coordinates of a point P on line joining two points A(x1,y1) and B(x2,y2) such that PA:PB is in the ration m:n would be ((mx2+nx1)/(m+n),(my2+ny1)/(m+n)).
_________________

Regards
Rahul

Manager
Joined: 12 Oct 2011
Posts: 121
GMAT 1: 700 Q48 V37
GMAT 2: 720 Q48 V40
Re: Geometry Formulas Practice Sheet  [#permalink]

### Show Tags

04 Jan 2012, 07:33
Could anybody please rewrite and explain the formulas for arc measure( intersecting chords) and arc measure (intersecting secants/tangents)?
Manager
Joined: 05 Nov 2012
Posts: 153
Re: Geometry Formulas Practice Sheet  [#permalink]

### Show Tags

13 Nov 2012, 11:06
In the formula sheet.... Arc Measure (Intersecting Secants/Tangents) [2] formula shouldn't it be angle C = AD-BD/2 since C is external point.
Math Expert
Joined: 02 Sep 2009
Posts: 47222
Re: Geometry Formulas Practice Sheet  [#permalink]

### Show Tags

23 Dec 2012, 07:45
Amateur wrote:
In the formula sheet.... Arc Measure (Intersecting Secants/Tangents) [2] formula shouldn't it be angle C = AD-BD/2 since C is external point.

Check here: geometry-formulas-practice-sheet-81427.html#p670925

Better resource on that is here: math-circles-87957.html
_________________
Non-Human User
Joined: 09 Sep 2013
Posts: 7353
Re: Geometry Formulas Practice Sheet  [#permalink]

### Show Tags

31 Mar 2018, 10:47
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
Re: Geometry Formulas Practice Sheet &nbs [#permalink] 31 Mar 2018, 10:47
Display posts from previous: Sort by

# Events & Promotions

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.