Answer:

Allied (or co-interior)angles are supplementary. Vertically opposite anglesare always equal.

Explanation ;-

fig see in attachment⬆️please

AB and CD are two parallel lines. PQRS in the following diagram is a transversal. If two parallel lines are cut by a transversal as shown in the next diagram, we refer as follows to the angles formed:

∠AQR & ∠QRD (or ∠BQR & ∠QRC) are alternate angles.

∠PQB & ∠QRD (or ∠BQR & ∠DRS) are corresponding angles.

∠BQR & ∠QRD (or ∠AQR & ∠QRC) are allied (or co-interior) angles.

∠PQB & ∠AQR (or ∠QRC & ∠DRS) are vertically opposite angles.

Remember:

Alternate angles are always equal.

Corresponding angles are always equal.

Allied (or co-interior) angles are supplementary.

Vertically opposite angles are always equal.

Hope it helps you :)

Thank you❤