# Rhombus in a circle, find angles

#### rmehta

##### New member
Hello Friends,
Kindly help to solve:
O B C and D are the vertices of a rhombus & A B C and D lie on the circle with centre O. Find angles - BOC, OBC, BAC, BDC

#### pka

##### Elite Member
Kindly help to solve: O B C and D are the vertices of a rhombus & A B C and D lie on the circle with centre O. Find angles - BOC, OBC, BAC, BDC
Can you discuss why $$\displaystyle \Delta OBC$$ is equilateral?

#### rmehta

##### New member
Thanks a lot for reply. Actually it was my first post and there was small mistake in writing the problem too.
But fortunately I got the solution myself after banging the head again and again

I will post some other problem if need be. Thanks again