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Lakshmi Sridhar
Subject: Maths
, asked on 13/1/18
$\mathit{Q}\mathbf{}\mathbf{4}\mathbf{.}Thepoints\left(-a,-b\right),\left(0,0\right),\left(a,b\right),\left({a}^{2},ab\right)are\phantom{\rule{0ex}{0ex}}\left(a\right)Verticesofaparalle\mathrm{log}ram\phantom{\rule{0ex}{0ex}}\left(b\right)Collinear\phantom{\rule{0ex}{0ex}}\left(c\right)Verticesofarec\mathrm{tan}gle\phantom{\rule{0ex}{0ex}}\left(d\right)3collinearpointsanda{4}^{th}pointoutsidetheline$
$\mathit{Q}\mathbf{}\mathbf{5}.LetPSbeamedianofthetrianglePQRwithverticesP\left(2,2\right),Q\left(5,-1\right),R\left(7,3\right).IfTisthepoint\left(1,-4\right)thenSTisperpendicularto\phantom{\rule{0ex}{0ex}}\left(a\right)PQ\phantom{\rule{0ex}{0ex}}\left(b\right)QR\phantom{\rule{0ex}{0ex}}\left(c\right)RS\phantom{\rule{0ex}{0ex}}\left(d\right)PS$
Answer
1
Lakshmi Sridhar
Subject: Maths
, asked on 13/1/18
answer 3rd question
Answer
1
Lakshmi Sridhar
Subject: Maths
, asked on 13/1/18
PLZ ANSWER DONT LINK. Find the ortho centre of the triangle whose vertices are (3,4)(4,0)(0,0)
Answer
7
Komal Gupta
Subject: Maths
, asked on 12/1/18
$IfD\left(-\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$2$}\right.,\raisebox{1ex}{$5$}\!\left/ \!\raisebox{-1ex}{$2$}\right.\right)E\left(-7,3\right)andF\left(\raisebox{1ex}{$-7$}\!\left/ \!\raisebox{-1ex}{$2$}\right.,\raisebox{1ex}{$7$}\!\left/ \!\raisebox{-1ex}{$2$}\right.\right)arethemid-pointsofthesidesof\u2206ABC.\phantom{\rule{0ex}{0ex}}Findtheareaof\u2206ABC.$
Answer
1
Komal Gupta
Subject: Maths
, asked on 12/1/18
18
Q18. Find the co-ordinates of the centre of the circle which passes through the points A (3, 2) B (4,5) an C (3, – 2).
Answer
2
Gouri Lahoti
Subject: Maths
, asked on 12/1/18
While finding area of triangles in coordinate geometry chapter, sometimes we get area in NEGATIVE values. Then what should we do?(example is in the pic)
$\u2206BCD\phantom{\rule{0ex}{0ex}}{x}_{1}=3,{x}_{2}=-3,{x}_{3}=2\phantom{\rule{0ex}{0ex}}{y}_{1}=-2,{y}_{2}=-5,{y}_{3}\u2206=3\phantom{\rule{0ex}{0ex}}Area=\frac{1}{2}\left[{x}_{1}\left({y}_{2}-{y}_{3}\right)+{x}_{2}\left({y}_{3}-{y}_{1}\right)+{x}_{3}\left({y}_{1}-{y}_{2}\right)\right]\phantom{\rule{0ex}{0ex}}=\frac{1}{2}\left[3\left(-8\right)+\left(-3\right)\left(5\right)+2\left(3\right)\right]\phantom{\rule{0ex}{0ex}}=\frac{1}{2}\left[-24-15+6\right]\phantom{\rule{0ex}{0ex}}=\frac{-33}{2}uni{t}^{2}$
Answer
2
Gouri Lahoti
Subject: Maths
, asked on 12/1/18
We find that diagonals are shorter than the sides and yet the quadrilateral is formed. Is it possible? Can any quadrilateral have its diagonals shorter than its sides? (Refer the photo attached)
Answer
1
Deisha Gupta
Subject: Maths
, asked on 10/1/18
what is the distance between the points A(since theta - cos theta , 0 ) and B(0 , sin theta + cos theta )
Answer
1
Deisha Gupta
Subject: Maths
, asked on 10/1/18
find the value of k for which the points are colinear ( 3k-1, k-2) , ( k , k-7) and (k-1, -k-2)
Answer
1
Deisha Gupta
Subject: Maths
, asked on 10/1/18
Find the ares if triangle PQR with Q(3,2) and the mid points of the sides through Q being (2,-1) and (1,2)
Answer
1
Deisha Gupta
Subject: Maths
, asked on 10/1/18
in triangle ABC the coordinates of vertex A are (0,-1) D(1,0) and E(0,1) respectively the mid points of sides AB and AC . if F is the mid point of side BC , find the area of triangle DEF.
Answer
2
Deisha Gupta
Subject: Maths
, asked on 10/1/18
find the ares if quadrilateral abcd coordinates of whose vertices are A(-32) , B(5,4) ,C(7,-6) and D(-5,-4)
Answer
1
Deisha Gupta
Subject: Maths
, asked on 10/1/18
if (0,-3) and (0,3) are the two vertices of an equilateral triangle , find
the coordinates of its third vertices
Answer
2
Payal Arora
Subject: Maths
, asked on 9/1/18
The 3 vertices of a parallelogram ABCD are A(3,-4) B(-1,-3) C(-6,2). Find the fourth vertix
Answer
3
Shivam
Subject: Maths
, asked on 8/1/18
10. If two adjacent vertices of a parallelogram are (3,2) and (-1, 0) and the diagonals intersect at (2, -5), then find the coordinates of the other two vertices.
Answer
1
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What are you looking for?

$\mathit{Q}\mathbf{}\mathbf{5}.LetPSbeamedianofthetrianglePQRwithverticesP\left(2,2\right),Q\left(5,-1\right),R\left(7,3\right).IfTisthepoint\left(1,-4\right)thenSTisperpendicularto\phantom{\rule{0ex}{0ex}}\left(a\right)PQ\phantom{\rule{0ex}{0ex}}\left(b\right)QR\phantom{\rule{0ex}{0ex}}\left(c\right)RS\phantom{\rule{0ex}{0ex}}\left(d\right)PS$

Q18. Find the co-ordinates of the centre of the circle which passes through the points A (3, 2) B (4,5) an C (3, – 2).

$\u2206BCD\phantom{\rule{0ex}{0ex}}{x}_{1}=3,{x}_{2}=-3,{x}_{3}=2\phantom{\rule{0ex}{0ex}}{y}_{1}=-2,{y}_{2}=-5,{y}_{3}\u2206=3\phantom{\rule{0ex}{0ex}}Area=\frac{1}{2}\left[{x}_{1}\left({y}_{2}-{y}_{3}\right)+{x}_{2}\left({y}_{3}-{y}_{1}\right)+{x}_{3}\left({y}_{1}-{y}_{2}\right)\right]\phantom{\rule{0ex}{0ex}}=\frac{1}{2}\left[3\left(-8\right)+\left(-3\right)\left(5\right)+2\left(3\right)\right]\phantom{\rule{0ex}{0ex}}=\frac{1}{2}\left[-24-15+6\right]\phantom{\rule{0ex}{0ex}}=\frac{-33}{2}uni{t}^{2}$

the coordinates of its third vertices