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Math: Triangles

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Re: Math: Triangles [#permalink] New post 20 Aug 2011, 06:05
Bunuel wrote:
A right triangle can also be isosceles if the two sides that include the right angle are equal in length (AB and AC in the figure above)


Shouldn't that be CB and AC?


Great material. Thanks for the compilation.
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Re: Math: Triangles [#permalink] New post 04 Nov 2011, 09:23
Bunnel great post.

But i have one qstn. Isnt it too much information about triangles from GMAT perspective. Or is it necessary to grab all the concepts put up.
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Re: Math: Triangles [#permalink] New post 08 Nov 2011, 21:45
I LOVE GMATCLUB!!!!!
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Re: Math: Triangles [#permalink] New post 13 Nov 2011, 22:16
great job! thank you for posting the problems related!
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Re: Math: Triangles [#permalink] New post 26 Dec 2011, 23:03
Awesome... thats what i needed..
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Re: Math: Triangles [#permalink] New post 05 Mar 2012, 03:38
Bunuel, you posted this in 2009. It's 2012 now and I am finding this so useful. Talk about leaving behind a legacy. you deserve a nice, large, value-saver family pack of Kudos!
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Re: Math: Triangles [#permalink] New post 05 Mar 2012, 03:49
Yup, I have been going through each section of the Math Book since morning!
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Re: Math: Triangles [#permalink] New post 05 Mar 2012, 08:17
Has a similar project been done for Verbal? I have Whiplash's CR material. (The one with the pretty cover and ZOMG! ZOMG! ZOMG! written on it). Has somebody put together a similar core-concepts book for Verbal?
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Re: Math: Triangles [#permalink] New post 06 Mar 2012, 21:41
excellent & very useful one
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Re: Math: Triangles [#permalink] New post 21 Mar 2012, 05:57
I WANT TO CALCULATE THE AREA OF A TRIANGLE WHOSE MEDIANS ARE GIVEN 12 CM 9 CM AND 6 CM

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Re: Math: Triangles [#permalink] New post 21 Mar 2012, 08:47
Let me just say that you sir, are awesome.

Small error here I think :"A right triangle inscribed in a circle must have its hypotenuse as the diameter of the circle. The reverse is also true: if the diameter of the circle is also the triangle’s hypotenuse, then that triangle is a right triangle.

Wouldn't it make more sense to say "if the diameter of the circle is one of the sides of a triangle inscribed in a circle, the triangle is a right triangle"? Calling the diameter a hypotenuse suggests that we already know that it's a right triangle. :)
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Re: Math: Triangles [#permalink] New post 28 Oct 2012, 05:31
Does GMAC test trignometry? for example - could we expect such problem?

Solve the triangle below for angle x and then compute the area of the triangle.

Say a triangle ABC with angles A, B and C with opposite sides to these angles a,b, and c respectively. a = 5 inches and b = 3 inches and angle A = 75 degrees find B =?

Thanks!
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Re: Math: Triangles [#permalink] New post 15 Nov 2012, 03:40
Quote:
• To find the base given the leg and altitude, use the formula:

• To find the leg length given the base and altitude, use the formula:

• To find the altitude given the base and leg, use the formula: (Where: L is the length of a leg; A is the altitude; B is the length of the base)


What is 'leg' of an isosceles triangle?
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Re: Math: Triangles [#permalink] New post 28 Dec 2012, 08:30
Expert's post
This is just awesome Bunuel...Thanks a lot for making the theory of one of the most important parts of GMAT Math readily available...

Could you please let me know that whether do we have any sort of thread that contains all Geometry 700+ problem collections in the forum ?

BTW,you sig. I guess,does not contain any specific Geometry problem set..Please confirm whether I'm correct.

Appreciate your feedback on this.
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Re: Math: Triangles [#permalink] New post 29 Dec 2012, 03:21
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debayan222 wrote:
This is just awesome Bunuel...Thanks a lot for making the theory of one of the most important parts of GMAT Math readily available...

Could you please let me know that whether do we have any sort of thread that contains all Geometry 700+ problem collections in the forum ?

BTW,you sig. I guess,does not contain any specific Geometry problem set..Please confirm whether I'm correct.

Appreciate your feedback on this.


Check here: ds-question-directory-by-topic-difficulty-128728.html and here: gmat-ps-question-directory-by-topic-difficulty-127957.html
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Re: Math: Triangles [#permalink] New post 29 Dec 2012, 05:21
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Bunuel wrote:
debayan222 wrote:
This is just awesome Bunuel...Thanks a lot for making the theory of one of the most important parts of GMAT Math readily available...

Could you please let me know that whether do we have any sort of thread that contains all Geometry 700+ problem collections in the forum ?

BTW,you sig. I guess,does not contain any specific Geometry problem set..Please confirm whether I'm correct.

Appreciate your feedback on this.


Check here: ds-question-directory-by-topic-difficulty-128728.html and here: gmat-ps-question-directory-by-topic-difficulty-127957.html


Thanks Bunuel for your reply.

Well,that's the directory..have seen that already..but they contain the links of all the PS and DS problems submitted in the forum by all the forum members.But actually I was looking for specific Geometry problem set created by experts...like other problems in your signature.So,could you please share any such specific links,if any?

Appreciate your reply.
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Re: Math: Triangles [#permalink] New post 05 Feb 2013, 06:17
I think formula for Ratio of Area of triangles to the side must also be added...............
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Re: Math: Triangles [#permalink] New post 10 Jul 2013, 23:06
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Re: Math: Triangles [#permalink] New post 04 Feb 2014, 07:05
Hello Bunuel, I have downloaded the math book and it is simply amazing. Really awesome power packed PDF! Very helpful, I wish I came across this site much earlier.

I am currently going through Triangles and I have a small doubt regarding Median and angle bisector. In angle bisector section you mentioned that "each point of any angle bisector is equidistant from the sides of the triangle",
By extension can I say that the point at which the angle bisector intersects the opposite side is that side's midpoint? And therefore an angle bisector is the median?
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Re: Math: Triangles [#permalink] New post 05 Feb 2014, 20:48
Couple of things i wanted to inquire.
Ideas such as heron's formula, or finding the leg of an isosceles triangle and all the miscellaneous ideas that follow are they really essential?
Because the problems on the gmat pertaining to triangles can be solved using the major concepts i.e. area of a triangle or exterior and interior angles.

Are we required to go through the hefty formulae of triangles or do the basic ones suffice?
Re: Math: Triangles   [#permalink] 05 Feb 2014, 20:48
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