A star-polygon is drawn on a clock face by drawing a chord from each number to the fifth number counted clockwise from that number.  That is, chords are drawn from 12 to 5, from 5 to 10, from 10 to 3, and so on, ending back at 12.  What is the degree measure of the angle at each vertex in the star-polygon?
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<|im_start|>user
A star-polygon is drawn on a clock face by drawing a chord from each number to the fifth number counted clockwise from that number.  That is, chords are drawn from 12 to 5, from 5 to 10, from 10 to 3, and so on, ending back at 12.  What is the degree measure of the angle at each vertex in the star-polygon?
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A star-polygon is drawn on a clock face by drawing a chord from each number to the fifth number counted clockwise from that number.  That is, chords are drawn from 12 to 5, from 5 to 10, from 10 to 3, and so on, ending back at 12.  What is the degree measure of the angle at each vertex in the star-polygon?
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