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Mazyrski [523]
2 years ago
11

Explain how you found your answer

Mathematics
1 answer:
bogdanovich [222]2 years ago
5 0

Answer:

29°

Step-by-step explanation:

151° + a=180°

We know the sum of angles in a straight line is 180°

a= 180°-151°

The sign changed as it changed sides

a= 29°

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