In a parallelogram, the sum of adjacent angles is
A) 90∘
B) 180∘
C) 270∘
D) 360∘
In a parallelogram, the sum of adjacent angles is
A) 90∘
B) 180∘
C) 270∘
D) 360∘

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All real numbers are rational numbers.
A) True
B) False
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