Respuesta :

Answer:

a. 50

Step-by-step explanation:

130 and angle 6 have to add up to 180 which means you subtract 130 from 180 which gives you 50

50°, since the lines are parallel you can assume that angle 6 and angle 7 are identical in degree, knowing that the angle next to 7 is 130 you subtract 130 from 180 to find 50
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