Answer :

Answer:

(B) Supplementary.

Step-by-step explanation:

Note that ABD is a straight line, which means that the total angle measurement is 180°. When two angles (∠ABC & ∠DBC respectively) are combined and form a straight line (180°), they are known as supplementary angles.

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Rewritten by : Barada

Supplementary because they add up to 180 degrees