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 Finding angle measures inside of a circle?

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T O P I C    R E V I E W
Hayden4iz Posted - 04/03/2012 : 11:50:01
Here are a couple of my homework problems that I need some help with. I don't know where to even start. Would someone please be kind enough as to help?

Problem 1. http://i43.tinypic.com/1fu0xi.jpg
Solve for x and y.
I found x = 50 but i have no idea where to start with y.

Problem 2. http://i44.tinypic.com/34zbubm.jpg
Solve for z.

I guess my biggest problem is i don't know the relation between the different inscribed angles. Any help would be greatly appreciated! Thank you very much in advance
4   L A T E S T    R E P L I E S    (Newest First)
Ultraglide Posted - 04/03/2012 : 18:15:54
What do x and y add up to? I have never seen arcs measured in degrees.
royhaas Posted - 04/03/2012 : 14:47:00
Use what you know about vertical (opposite) angles.
Hayden4iz Posted - 04/03/2012 : 12:35:04
They refer to the measurement of the arc, if I understand correctly.
Ultraglide Posted - 04/03/2012 : 12:16:48
I have a question about the diagrams. What do the angle measures on the circumference of the circles refer to?

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