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Julien Le Coupanec · Answer 1 · 2019-02-28T22:05:18+0000

If angle AED is 90 degrees and angle AEB is 60 degrees. Subtract 60 from 90. Since BEC and CED are equal, the difference of 60 minus 90 (30) divided by two is the sum. 60 + 15 +15 = 90. BEC and CED equal 15 degrees. Good luck.

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