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If angles are supplementary, then one of the angles is an obtuse angle.

a[always
b[sometimes
c[never

User Mdnghtblue
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1 Answer

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always, because supplementary means it would add up to 180, but one of the angles must be greater than 90 otherwise if its less and the other one is less, then they will not add to 180
User Amorenew
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