Please Find the Attached Question.
- Attachments
-
- Data Sufficiency, Geometry.ppt
- (14 KiB) Downloaded 130 times
The answer would be C , both statements together are sufficient
soln -
On point B , draw a line EF parallel to AC
from point 2 , X = 36 , so in triangle BDC angle DBC = 36
then angle FBC = 72 ( since angle BCD = 72 )
triangle BDC is isosceles , so BD=BC
similarly angle EBA = 36 ( since angle BAD = 36 )
from this it can be concluded that angle ABD = 36
that means triangle ABD is isosceles too
thus , AD = BD
now from point 1 AD = 6
so , BD = BC = 6
