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2 votes
What is the answer for the attached picture

What is the answer for the attached picture-example-1
User Impirator
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1 Answer

3 votes
It should be 13 as well
Because the arc length of CDE and ABCD are both 90 degrees. They share 20 degrees from arc CD and they already both have 70 degrees. So if the arc length is equal, the corresponding chords should be equal too.
User Rprospero
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