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manasiriya2003
@manasiriya2003
August 2021
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Ques 6 fasttt....help me I have my exam......plzzz class 10 maths
Answers & Comments
Ayushibilwadia
We know that if AD is a meadian of triangle ABC , then AB²+AC²=2AD²+1\2BC²
Since the diagonals of a parallelogram bisect each other, therefore , BO and DO are meadian ofABC and ADC respectively.
AB²+BC²=2BO²+1\2AC² eq1
and
AD²+CD²=2DO²+1\2AC² eq2
NOW ADD Equation 1 and 2 we will get
=AB²+BC²+CD²+AD²=2(BO²+DO²)+AC²
=AB²+BC²+CD²+AD²=2(1\4BD²+1\4BD²)
=AD²+BC²+CD²+AD²=AC²+BD²
Hope it will help u
Thank u
1 votes
Thanks 0
pala3377
hi
pala3377
xxx
Ayushibilwadia
hi
pala3377
how are you
pala3377
busy ho Kia
manasiriya2003
Thnku
Ayushibilwadia
welcome
malayali24
Here is your answer.
Hope it helps you
1 votes
Thanks 0
malayali24
set 1 had 2 quite difficult questions
Ayushibilwadia
i got set 2
malayali24
Mm
manasiriya2003
No not that much easy but it was good
manasiriya2003
So u from where ??
manasiriya2003
I m from cbse
manasiriya2003
Board
malayali24
l am also cbse
malayali24
l am from kerala
manasiriya2003
Ok i m from UK
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Answers & Comments
Since the diagonals of a parallelogram bisect each other, therefore , BO and DO are meadian ofABC and ADC respectively.
AB²+BC²=2BO²+1\2AC² eq1
and
AD²+CD²=2DO²+1\2AC² eq2
NOW ADD Equation 1 and 2 we will get
=AB²+BC²+CD²+AD²=2(BO²+DO²)+AC²
=AB²+BC²+CD²+AD²=2(1\4BD²+1\4BD²)
=AD²+BC²+CD²+AD²=AC²+BD²
Hope it will help u
Thank u
Hope it helps you