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17 Jan 2016, 12:24
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In rhombus ABCD, what is angle BCD?
(1) BC = BD
(2) Angle BDA = 60°
Attachment:
2016-01-17_2322.png [ 4.17 KiB | Viewed 3721 times ]
rachitbechem
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Updated on: 18 Jan 2016, 10:52
Originally posted by rachitbechem on 17 Jan 2016, 23:58.
Last edited by rachitbechem on 18 Jan 2016, 10:52, edited 1 time in total.
Last edited by rachitbechem on 18 Jan 2016, 10:52, edited 1 time in total.
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Bunuel
In rhombus ABCD, what is angle BCD?
(1) BC = BD
(2) Angle BDA = 60°
Attachment:
2016-01-17_2322.png
Editing my post
IMO D. (I read Geometry rules and now understood Rhombus has equal sides)
With Statement 1: BC = BD hence it gives BC=BD=AD. Since all sides equal hence 60 deg. Therefore Sufficient
With Statement 2: angle BDA = 60 therefore angle DBC is also 60. Again since we got one angle and we know by rhombus property that BC = CD therefore all angles equal. Therefore Sufficient
18 Jan 2016, 01:26
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rachitbechem
Bunuel
In rhombus ABCD, what is angle BCD?
(1) BC = BD
(2) Angle BDA = 60°
Attachment:
2016-01-17_2322.png
With Statement 2: angle BDA = 60 therefore angle DBC is also 60. We cannot infer what angle C is in angle BCD. Not sufficient
Hi,
boththe statements are suff alone..
With Statement 1: BC = BD hence it gives BC=BD=AD. all angles are 60 .. suff
With Statement 2: angle BDA = 60 , the diagonal bisects the angle so BCD= 60.. suff
