My question is

Asked by 100.akash | 14th Sep, 2008, 12:40: PM

Expert Answer:

In OAB & ODC

OD = OA (Given)

OC = OB (Given)

AB = CD (Given)

OAB  ODC

OAD =ODA                     (Angle opposite to equal sides)

OCB =OBC                      (Angle opposite to equal sides)

OAB =ODA                       (By cpct)

OBA =OCD                    (By cpct)

OAD + OAB +OBA +OBC+ OCB +OCD+ ODC+ODA =3600

OAD + OABOBA +OBC = 1800              (Composite pairs)

BC is parallel to AD

 

Answered by  | 2nd Feb, 2009, 01:12: PM

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