Which angles are supplementary to each other?

• Angle 7 and Angle 3
• Angle 9 and Angle 12
• Angle 6 and Angle 12
• Angle 12 and Angle 10​

Which angles are supplementary to each other Angle 7 and Angle 3 Angle 9 and Angle 12 Angle 6 and Angle 12 Angle 12 and Angle 10 class=