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MZIJK = 57° and mZIJL = 20° Find mLJK

User Teysz
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we can write a relation


\angle IJL+\angle LJK=\angle IJK

so, replacing


20+\angle LJK=57

and solving for LJK


\begin{gathered} \angle LJK=57-20\cdot \\ \angle LJK=37 \end{gathered}

the value of LJK is 37° so, the right option is C

User Jazzee
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