Please help! Will fan and medal! (attachment in comments)

Question

mw647 · Answer

attachment

tkhunny · Answer

You have formulas for each of these.  Please look them up and show how to use them.

=

= (a+b)/2

= (a-b)/2

In no particular order.

Find the formulas!

mw647 · Answer

I'm kind of confused because I've never even been taught to solve this type of problem so I have no idea where to start?

phi · Answer

Here are the formulas http://www.regentsprep.org/Regents/math/geometry/GP15/CircleAngles.htm

phi · Answer

If you have time, here is a video on inscribed and central angles http://www.khanacademy.org/math/geometry/cc-geometry-circles/central-inscribed-circumscribed/v/inscribed-and-central-angles

mw647 · Answer

@phi  Thank you so much!