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marta [7]
3 years ago
9

I really help on this question

Mathematics
2 answers:
Marizza181 [45]3 years ago
3 0

Answer:

jojo reference

Step-by-step explanation:

Anni [7]3 years ago
3 0
X + 129 = 180
x = 180 - 129 = 51 degrees

If you need to show reasons
Adjacent angles on a straight line add to 180 (supplementary)
Corresponding angles on parallel lines are equal
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