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Qualification => Subject Doubts => IGCSE/ GCSE => Math => Topic started by: moon on October 27, 2009, 02:17:07 pm

Title: HELP IGCSE MATH JUN. 09 ppr 2
Post by: moon on October 27, 2009, 02:17:07 pm
plz help math Jun. 09 ppr2  Q.16
Title: Re: HELP IGCSE MATH JUN. 09 ppr 2
Post by: nid404 on October 27, 2009, 02:19:58 pm
Draw the angle bisector. That's the locus. I'll draw it and show so you have a better idea
Title: Re: HELP IGCSE MATH JUN. 09 ppr 2
Post by: @d!_†oX!© on October 27, 2009, 02:20:20 pm
just simply draw the angle bisectors of the two opposite angles in the centre and extend it on both side till the edge of the quadrilateral!!
Title: Re: HELP IGCSE MATH JUN. 09 ppr 2
Post by: Ghost Of Highbury on October 27, 2009, 02:23:39 pm
attached
Title: Re: HELP IGCSE MATH JUN. 09 ppr 2
Post by: nid404 on October 27, 2009, 02:25:34 pm
Note:keep the radius constant...this is imp
Title: Re: HELP IGCSE MATH JUN. 09 ppr 2
Post by: moon on October 27, 2009, 02:44:07 pm
Sorry still didn't get it. ??? ???Please help
Title: Re: HELP IGCSE MATH JUN. 09 ppr 2
Post by: @d!_†oX!© on October 27, 2009, 02:47:14 pm
dude see
there are four angles in total....two opposite each other...
so when u have to draw the locus of points equidistant from both these lines...u gotta make the angle bisector for all four angles which is same as making two angle bisectors of the opposite angles
Title: Re: HELP IGCSE MATH JUN. 09 ppr 2
Post by: moon on October 27, 2009, 02:50:52 pm
Sorry once again Why didn't we draw the perpendicular bisector as usual???? ???
Title: Re: HELP IGCSE MATH JUN. 09 ppr 2
Post by: Ghost Of Highbury on October 27, 2009, 02:52:24 pm
perpendicular bisector can be drawn for a line.(1800)..for an angle..its angle bisector
Title: Re: HELP IGCSE MATH JUN. 09 ppr 2
Post by: nid404 on October 27, 2009, 02:53:05 pm
Quote from: moon on October 27, 2009, 02:44:07 pm
Sorry still didn't get it. ??? ???Please help

Do you know how to draw an angle bisector??

I'll put the steps down for u

Let the point of intersection of the two line be called M

First draw angle bisector for AM and BM. keep your compass and M and take a radius more than half of AM/BM and cut the two lines  and call them points X and Y. With the same radius draw an arc from X and cut the arc with same radius from Y. Join M with the intersection of the arcs. Repeat for other lines.

I'll post another diagram below

Title: Re: HELP IGCSE MATH JUN. 09 ppr 2
Post by: nid404 on October 27, 2009, 03:08:06 pm
go thru this
Title: Re: HELP IGCSE MATH JUN. 09 ppr 2
Post by: moon on October 27, 2009, 03:30:44 pm
Thanks a lot for all of you. :) :)
Title: Re: HELP IGCSE MATH JUN. 09 ppr 2
Post by: nid404 on October 27, 2009, 03:36:05 pm
Quote from: moon on October 27, 2009, 03:30:44 pm
Thanks a lot for all of you. :) :)

anytime and Good Luck :)
Title: Re: HELP IGCSE MATH JUN. 09 ppr 2
Post by: @d!_†oX!© on October 27, 2009, 03:39:18 pm
hey nid....
u posted the diagrams on te wrong thread!!!!
hahaha.....llollzzzz :D
Title: Re: HELP IGCSE MATH JUN. 09 ppr 2
Post by: nid404 on October 27, 2009, 03:39:50 pm
yeah lol...big confusion