Greg is constructing a fence that consists of parallel sides ED and FB. Complete the proof to explain how he can show that m_FAC = 121° by finding the missing justifications
Statement
Justification
ED FB
MZECG = 121°
Given
mZECG + MZECA = 180°
Linear Pair Postulate
m_FAC + MZECA = 180°
1.
MZECG + MZECA = m_FAC + MZECA Transitive Property
mZECG = m_FAC
mZFAC = m_ECG
Subtraction Property
Symmetric Property
2.
mZFAC = 121°
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