Mathematics, 04.07.2020 05:01 tbiles99
Daniel is constructing a fence that consists of parallel sides line AB and line EF. Complete the proof to explain how he can show that m∠GKB = 120° by filling in the missing justifications. StatementJustification line AB ∥ line EF m∠ELJ = 120°Given m∠ELJ + m∠ELK = 180°Linear Pair Postulate m∠BKL + m∠GKB = 180°Linear Pair Postulate m∠ELJ + m∠ELK = m∠BKL + m∠GKBTransitive Property ∠ELK ≅ ∠BKL1. m∠ELK = m∠BKL2. m∠ELJ + m∠ELK = m∠ELK + m∠GKBSubstitution Property m∠ELJ = m∠GKBSubtraction Property m∠GKB = m∠ELJSymmetric Property m∠GKB = 120°Substitution
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