The angles that are supplementary angles are ∠ONK and ∠ONP
Supplementary angles
From the question, we are to determine which of the given angle pairs are supplementary
Supplementary angles are angles whose measures sum up to 180°.
Supplementary angles form a straight line.
In the given diagram,
∠ONK and ∠MNP are not supplementary, they are vertically opposite.
∠ONK and ∠JKN are not supplementary, they are alternate angles.
∠ONK and ∠LKI are not supplementary, they are corresponding angles.
∠ONK and ∠ONP are supplementary, they form a straight line.
Hence, the angles that are supplementary are ∠ONK and ∠ONP
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