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Find the value of x in the triangle shown below.=2°31770

Find the value of x in the triangle shown below.=2°31770-example-1

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The sum of all the angles in a triangle is always 180°.

We can write the equation and solve for the missing angle:


31^o+77^o+x=180^o

Solving for x:


\begin{gathered} x=180^o-31^o-77^o \\ \\ x=72^o \end{gathered}

The measure of the unknown angle is 72 degrees.

User Aaron Stuyvenberg
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