120 Danial is constructing a fence that consists of parallel sides AB and EF Complete the proof to explain how he can show that muGKE = 120" by filling in the missing justifications
Statement
Juctifloation
ABEF
Given
MLELJ = 120
MELJ - MELK = 180°
Linear Par Postulate
m2BKL. MLGKB = 180"
Linear Par Postusta
MELJ MLELK = MZEKLMGKB Transitive Property
LELK LBKL
1.
MELK EMEKL
Z
MELJ - MELK = MELK - MGKB Suostution Property
MELJEMZGKB
Subtraction Property
MGKB = MEL
Symmetric Property
MGKB = 120
Subatution
1. Alternate Interior Angios Thooram 2. Definition of Congruenca
1. Alternate Exterior Angle Thacom 2. Substitution Property
1. Defits of Cangwance 2. Alternato interior Argler Theorem
1 Substitution Proty, 2. Alternate Exterior Angios Thorom