Question 1042494
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Let arc AC have measure *[tex \Large x], and arc BD have measure *[tex \Large y], then angle BED has measure *[tex \Large \frac{x\ +\ y}{2}].  But angle BED is also equal to *[tex \Large 50^\circ], so


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ x\ +\ y\ =\ 100]


But the sum of arcs BC and DA is *[tex \Large 360^\circ\ -\ (x\ +\ y)]


So  360 minus 100 = 260.


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
<img src="http://c0rk.blogs.com/gr0undzer0/darwin-fish.jpg">
*[tex \Large \ \
*[tex \LARGE \ \ \ \ \ \ \ \ \ \  

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