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Help I do not know how do you do this ?

Help I do not know how do you do this ?-example-1

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m\angle LKJ=360-m\angle KJM-m\angle JML-m\angle MLK\\ m\angle LKJ=360-132-48-m\angle MLK\\ m\angle LKJ=180-m\angle MLK\\\\ m\angle MLK=180-m\angle KLN\\ m\angle MLK=180-150\\ m\angle MLK=30^(\circ)\\\\ m\angle LKJ=180-30\\ \boxed{m\angle LKJ=150^(\circ)}
User Jordi Llull
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