If ABCD is a square and BCE is an equilateral triangle, what is the measure of ∠DEC? <img src="https://cracku.in/media/uploads/2015/08/11/untitled_3

1. If ABCD is a square and BCE is an equilateral triangle, what is the measure of ∠DEC?

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By: anil on 05 May 2019 02.33 am

According to given diagram, as triangle BCE is equilateral CE=BE=DC
Hence angle CDE = angle CED

So angle DEC = $$frac{180-150}{2} = 15$$

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