Answered

The flag shown above is made of overlapping


equilateral triangles ADF and BCE. Because ribbon


is to be sewn around the entire outer edge, it is


necessary to know the perimeter of the flag. If


line segment CD, line segment DE, and line


segment EF each have length 10 inches, what


is the length, in inches, of the perimeter shown


in bold?

Verified Answer :

\(\triangle{GDE}\) is equilateral

DE = GD = GE = 10 => AG = BG = 10

P = AC + AG + GB + BF + FC = 20 + 10 + 10 + 20 + 3×10 = 90

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