When a quadrilateral is inscribed in a circle, what is known about the opposite angles?

Question

agent0smith · Answer

google has your answer http://www.geom.uiuc.edu/~dwiggins/conj47.html

bunnielover948 · Answer

I don't understand what it's trying to say about it, sorry

bunnielover948 · Answer

@welshfella Could you help with this as well?

agent0smith · Answer

All you have to do is look at the first picture they give...

agent0smith · Answer

http://www.geom.uiuc.edu/~dwiggins/pict47.GIF

agent0smith · Answer

or read the explanation below that where it flat out tells you
"It says that these opposite angles are in fact supplements for each other. In other words, the sum of their measures is 180 degrees."

bunnielover948 · Answer

Sorry for not getting it the first time XD I'm not smart at math