Maths, Addmaths and Statistics: Post your doubts here!

[leosco1995]

I think you should use y-y1 = m(x-x1) in every single case except where you need to find the Y intercept. The only other purpose of y = mx + c (to my knowledge) is to determine the gradient from looking at or rearranging the equation.

 

[Waleed007]

BTW Thanks Guys for the help!

Well now Iam doing Loci and Construction;Iam a bit Confuse in a Question here its:
-> Construct a diagram,
(i): the triangle DEF,in which EF=10cm,DE^F=38* and DF^E=95*
(ii) the locus of points 4.5cm from F
(iii) the locus of points equidistant from DE and EF.
On your drawing,label the points P and W both of which are 4.5 from F and equidistant from DE and EF.Measure and write down the length PQ

Well,I have done till part 2 but iam confused in part 3 the Equidistant from DE and EF :no: :fool:

 

[SalmanPakRocks]

What is the distance for the last part comming?
is it 1cm?

 

[Waleed007]

Nah 6.4cm

 

[SalmanPakRocks]

This loci is confusing! Ok let me try again!

 

[SalmanPakRocks]

Ok got it! its actually 6.2 for me.

 

[SalmanPakRocks]

BTW Thanks Guys for the help!

Well now Iam doing Loci and Construction;Iam a bit Confuse in a Question here its:
-> Construct a diagram,
(i): the triangle DEF,in which EF=10cm,DE^F=38* and DF^E=95*
(ii) the locus of points 4.5cm from F
(iii) the locus of points equidistant from DE and EF.
On your drawing,label the points P and W both of which are 4.5 from F and equidistant from DE and EF.Measure and write down the length PQ

Well,I have done till part 2 but iam confused in part 3 the Equidistant from DE and EF :no: :fool:

In this part u have to draw an angle bisector.
Because there is a common side E given.

 

[Waleed007]

BTW Thanks Guys for the help!

Well now Iam doing Loci and Construction;Iam a bit Confuse in a Question here its:
-> Construct a diagram,
(i): the triangle DEF,in which EF=10cm,DE^F=38* and DF^E=95*
(ii) the locus of points 4.5cm from F
(iii) the locus of points equidistant from DE and EF.
On your drawing,label the points P and W both of which are 4.5 from F and equidistant from DE and EF.Measure and write down the length PQ

Well,I have done till part 2 but iam confused in part 3 the Equidistant from DE and EF :no: :fool:

In this part u have to draw an angle bisector.
Because there is a common side E given.

When the word 'EQUIDISTANT' Comes we should always draw angle bisector?

 

[SalmanPakRocks]

Well I think an Angle Bisector should be drawn yet i m not conformed about it! I forgot most of the topics in maths.
Yet I think we will draw an Angle bisector.

 

[Waleed007]

Well I think an Angle Bisector should be drawn yet i m not conformed about it! I forgot most of the topics in maths.
Yet I think we will draw an Angle bisector.

So we can draw angle by sector in any question when the word EQUIDISTANT from EF and FG right?

 

[SalmanPakRocks]

I guess so as its a triangle and there is no way u can draw a perpendicular bisector.

 

[Waleed007]

Or any other figure like Rhombus,Quadrilateral etc except for triangle

 

[SalmanPakRocks]

I think it will be a angle bisector for all!

 

[Waleed007]

I think it will be a angle bisector for all!

so well thanks... let me try that Question

 

[SalmanPakRocks]

Sure! any confusion just ask!

 

[scouserlfc]

When the question highlights the following do as stated !

1.equidistant from two lines like AB and AC go for an angle bisector !
2.When it says equidistant from two points A and B u make a perp bisector !
3.When it says equidistant to one point like C a circle needs to be drawn !
4.ANd when it is equidistant from one line like PQ u draw parallel lines above and below this line !

thats it ur LOCI is done but yeah sometimes u have these difficult questions that can derail ur concepts ! 8)

 

[Waleed007]

Yea but how do we draw...Angle bisector and Parallel lines? :unknown:

 

[scouserlfc]

Here is how u make angle bisectors !

 

[scouserlfc]

i wud tell u to read from Pg 609 onwards leaving the excercises !

http://www.babylon.k12.ny.us/PDF/geometry/Chapter14.pdf

or excercise 14.2

 

[Waleed007]

We can Use any length right?......Like to construct a triangle,Rhombus,Quadrilateral etc