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Pls help me with this math question i beg ​

Pls help me with this math question i beg ​-example-1
User Kba
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1 Answer

2 votes

Answer:

All angles in a quadrilateral = 360°

b =?

b = 360 - (128 + 61 + 57)

b = 360 - 246

b = 114°

User Thorsten Dittmar
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