Question

ZABC and ZQRS are supplementary angles.

Answer 1

Answer:

Solution given:

<ABC and <QRS are supplementary angles.

<ABC = 91°

we have

<ABC +<QRS=180°[supplementary]

<QRS=180°-91°=89°

m<QRS=89°

Answer 2

THEOREM:

Supplementary angle —» The sum of two angles is equal to 180°.

ANSWER:

By supplementary angle property,

So, m∠QRS + 91° = 180°

m∠QRS = 180° - 91°

m∠QRS = 89°.