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O is the center of the circle. Find the value of x, y, and z.
Is 80 an angle measure, segment length, or what?
its a degree: |dw:1361764300764:dw|
To which angle does the 80 go?
i attached it to its angle
Well the first diagram i put up was what was in my book. ill put up a pic of the original
ill just draw it again. |dw:1361765174710:dw|
Is that more clear?
Yes. Let us think a minute.
I don't see how that 80 degree angle could actually be 80 degrees if it is located and correctly marked.
An angle formed by a chord and a tangent on a circle has measure 1/2 its intercepted arc. So that arc would be 160.
Assuming the the exterior segment is a tangent. It was not given to be.
I see three congruent chords in the same circle. So they have congruent arcs.
160*3 exceeds the number of possible degrees in a circle. So, I don't know what to write. Are you sure you posted all the given information?
Yup. Ill give you a medal for the help though. Thanks!