sandeepsajwan Says

Guys, I have a doubt. Do not recall if I have studied any such rule that states - In an equilateral triangle, the angle bisectors are medians and divide the triangle in two equal right angled triangles. Is this true?

mbafrmfms Says

Bhaiyo khoon thanda ho gaya kya?

mbafrmfms Says

Attached JPEG

SET - 7

In the figure given below, a tangent is drawn at point P on a circle of radius 1 cm. A and B are two points on the tangent and ABCD is a rectangle, where C and D are two points on the circumference of the circle. What is the approximate area (in cm2) of the rectangle ABCD if 2AB = BC?

a 1.77
b 1.50
c 1.83
d 1.60

SET-5

My take

2:9

Area of part y

ADHK|BC

In tria AOB

BH/HA=1

and HI|AO

so by mid point theorem

BI/IO=1
BI=IO

Now do the same in tria BOC, we eil get Area of IOJ=half area of BOC

so area of y= half area of BOC

Area of x

Centroid will divide triangle into 3 equal area triangles. Also centroid divides Euler line in the ratio of 2:1
so area of x= 1/9(area of tria AEO)

Ans should be 2:9

Please confirm

Answers for SET - 4

Lets Consider Goat-1,

Lets first build the area/plot where the goat will graze.

From the question it is a square plot (diagram attached) of side 10 m.

Let Goat-1 be at the top most left edge.

When it grazes through the Square plot, it will graze through a area = one quadrant of a circle with radius = 10 m.

Hence area grazed by Goat 1 = (1/4) * pi * 10 * 10 = 50pi m^2
Hence Total grazing area = 100 pi m^2

@CAT_gunner

Kindly confirm if my method is correct !! A nice concept builder question !! Thank you !!

SET - 6
PQR is an equilateral triangle. Side QR is extended to S such that the area of triangle PRS becomes half the area of triangle PQS. What is the value of QPS?

1. 90
2. 105
3. 120
4. 75

mbafrmfms Says

Thx fr d material jus one doubt the material is the replica of NCERT books?

Buddy,

Currently what we are doing is that we are discussing basic concept builder problems, slowly we will move to Level-2 and Level-3 ones on the whole.Also once a mock is up, i will post Geometry questions from all mock tests. I am sure most of the fundas will be covered here.

For our learning purpose, I will put up also many questions on triangles in the forthcoming days !! Hope it suffices the necessity
Let me know your views !

Great start buddy!!!! at least now, i need to improve (sorry) learn Geometry...
Puys one suggestion, how abt covering topic wise??
Lets start with traingles and den after 2 days move on to next topic.. so tat it ll be beneficial for ppl like me who r very weak in geo.. v can build the concepts thorougly.. Hope u puys understand
Thanku

Hi Guys,

PS: link to the previous geometry thread - http://www.pagalguy.com/forum/quantitative-questions-and-answers/856-geometry.html

ankurgautam Says

Not able to download....pls help

Hi Guys,

Geometry, Algebra and Number system form the major chunk of our QA section for CAT.

Proficiency in these three sections would definitely boost our Quants scores.


Contents of Geometry
1. Plane Geometry - Basics and Triangles
2. Polygons and Quadrilaterals
3. Circle
4. Mensuration
5. Trignometry
6. coordinate Geometry


Lets have this thread dedicated to discussing Geometry.

I have attached the lessons from class X NCERT maths book. Its very useful in building up the fundas