Diagram, line bc is parallel to de. i.e bc de abc = 42 cab = 109 find falls
1 answer:
Answer:
x = 29°
Step-by-step explanation:
Since line BC is parallel to line DE, therefore:
m<BAD = 42° (alternate interior angles are congruent)
m<BAD + m<BAC + x = 180° (angles on a straight line)
42° + 109° + x = 180° (substitution)
151° + x = 180°
Subtract 151 from each side
x = 180 - 151
x = 29°
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