The sum of the page numbers of two facing pages in a book is 145. What are the page numbers?
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For each of the problems, twice the angle formed by the chords is equal to half the sum of the angles of the arcs.
So, for the first problem, we have
, so 
.
For the second,
, so 
.
For the last problem,
, so 
.
Feel free to comment below if you have any questions!
So, for the first problem, we have
For the second,
For the last problem,
Feel free to comment below if you have any questions!