Circles

Sep 2008
71
0
Hey guys I have a few questions to ask you guys.

I have quadrilateral that has the angle measures: 130, 92, and 70. It asks me if Ia circle can be circumscribed in there. How do I know if it can or can't?

Now I need help with these Imageshack - asdjw.jpg
I'm supposed to find the indicated arc or angle measure. For the first on how would I find arc AB and the second how do I find angle A?

Thanks for your help guys.


Also I was wondering has anyone ever done those big,bigger,biggest circle puzzle? I would like to double check my answers with anyone if possible.
 
Jun 2009
806
275
In the figures, what are 101, 120 and 98? What is point C?
 
Sep 2008
71
0
I don't know what point C is it's just there, but the number 101 is the angle measure and the others are arc measures.