Question

an angle measures 142° less than the measure of its supplementary angle. what is the measure of each angle?

Answer 1

A - an angle

S - its supplementary angle

A = S - 142°

Supplementary angles add to 180° so:

A + S = 180°

S - 142° + S = 180°

2S = 322°

S = 161°

A = 161° - 142° = 19°

19° and 161°

Answer 2

Answer:

Step-by-step explanation:

A - an angle

S - its supplementary angle

A = S - 142°

Supplementary angles add to 180° so:

A + S = 180°

S - 142° + S = 180°

2S = 322°

S = 161°

A = 161° - 142° = 19°

19° and 161°