3 years ago

∠ABC and ∠DEF are supplementary.

1 answer:

8 0

As the angles are supplementary, their sum would be equal to 180
∠ABC + ∠DEF = 180
138 + ∠DEF = 180
∠DEF = 180 - 138
∠DEF = 42

In short, Your Answer would be Option A

Hope this helps!

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∠ABC and ∠DEF are supplementary.