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the measure of an interior angle of an equilateral triangle is given as 3n-6. solve for the value of nA. 22B. 60C.6D. 2
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the measure of an interior angle of an equilateral triangle is given as 3n-6. solve for the value of nA. 22B. 60C.6D. 2

User Esope
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\begin{gathered} (3n-6)+(3n-6)+(3n-6)=180 \\ 3(3n-6)=180 \\ \text{Solve for n:} \\ 3n-6=(180)/(3) \\ 3n-6=60 \\ 3n=60+6 \\ 3n=66 \\ n=(66)/(3) \\ n=22 \end{gathered}

User Bignum
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