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Maths problem (urgent)

Ask questions of CBSE Class IX and discuss the same here. For any doubts relates to CBSE Class IX.

Maths problem (urgent)

Postby salihamal » Sun Jan 31, 2010 9:07 pm

Image

In fig. show that AB//EF
salihamal
 
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Re: Maths problem (urgent)

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Re: Maths problem (urgent)

Postby mpkeshari » Tue Mar 16, 2010 8:20 pm

L ABC = L BCD(say) = 66^0
Therefore, AB II CD -------------------------- (1)
L FEC + L ECD(say) = 180^0
Therefore, EF II CD ------------------------------- (2)
From (1) and (2) we get,
AB II EF [Proved]
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