Two angles have a common side BC. What degree can the angle ABC have if the angle ABC is 25

Two angles have a common side BC. What degree can the angle ABC have if the angle ABC is 25 ‘, and the angle ABC is 140’?

1.Let’s find the degree measure of the angle ABC, if the sides of the angles ABC and СBK having a common side AB, lie on opposite sides of it, for this we add up their degree measures.

140⁰ + 25⁰ = 165⁰ degree measure of the angle ABK.

2.Let’s find the degree measure of the angle ABK, if the sides of the angles ABC and СBK having a common side AB, lie on one side of it, for this we subtract their degree measures from the larger smaller one.

140⁰ – 25⁰ = 115⁰ degree measure of ABK.

Answer: 165⁰; 115⁰.