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How do I find one angle of a parallelogram with an equation in the consecutive angle?

User Daks
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Angles of a Parallelogram.

The correct answer is 55

The consecutive angles of a parallelogram are supplementary, that is, sum up to 180 degrees)


\begin{gathered} 2x+15\text{ + x = 180} \\ \text{Collecting like terms, we get} \\ 2x+x=180-15 \\ 3x=165 \\ \text{Divide both sides by 3, we get} \\ x\text{ =}(165)/(3)=55 \end{gathered}

The correct answer is 55.

User Wattskemov
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