Mrfootballman97
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Mrfootballman97
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O is the center of the circle. Find the value of x, y, and z.

Directrix
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Is 80 an angle measure, segment length, or what?

Directrix
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@Mrfootballman97

Mrfootballman97
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its a degree: dw:1361764300764:dw

Directrix
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To which angle does the 80 go?

Mrfootballman97
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@Directrix

Mrfootballman97
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i attached it to its angle

Mrfootballman97
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Well the first diagram i put up was what was in my book. ill put up a pic of the original

Mrfootballman97
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ill just draw it again. dw:1361765174710:dw

Mrfootballman97
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Is that more clear?

Directrix
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Yes. Let us think a minute.

Directrix
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I don't see how that 80 degree angle could actually be 80 degrees if it is located and correctly marked.

Directrix
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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.

Directrix
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Assuming the the exterior segment is a tangent. It was not given to be.

Directrix
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I see three congruent chords in the same circle. So they have congruent arcs.

Directrix
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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?

Mrfootballman97
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Yup. Ill give you a medal for the help though. Thanks!