Does anyone know this? ive been stuck on it for a bit
line ab is parallel to ef. transversal...
Mathematics, 03.09.2019 02:10 khollier3119
Does anyone know this? ive been stuck on it for a bit
line ab is parallel to ef. transversal gj crosses line ab at k and crosses line ef at l. the measure of angle elj is 120 degrees.
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 mā gkb = 120Ā° by filling in the missing justifications.
statement justification
line ab ā„ line ef
mā elj = 120Ā° given
mā elj + mā elk = 180Ā° linear pair postulate
mā bkl + mā gkb = 180Ā° linear pair postulate
mā elj + mā elk = mā bkl + mā gkb transitive property
ā elk ā
ā bkl 1.
mā elk = mā bkl 2.
mā elj + mā elk = mā elk + mā gkb substitution property
mā elj = mā gkb subtraction property
mā gkb = mā elj symmetric property
mā gkb = 120Ā° substitution
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