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Triangle ABC is an isosceles right triangle with AC=9 square root 3 cm. F is the midpoint of hypotenuse AC, and triange DEF is equilateral. Find the perimeter of triangle DEF.

 Oct 8, 2020
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AF = AC / 2              ∠BAC = 45º             ∠DFA = 60º

 

Use the law of sines to calculate side DF

 Oct 8, 2020

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