One of the adjacent angles is 1200. Calculate the degree measure of the other angle.

In order to find the degree measure of the angles adjacent to the known to us, we will recall the definition of adjacent angles and their properties.

The condition says that one of the adjacent angles is 120 °.

Let’s remember the definition of adjacent corners. So, adjacent angles are called angles in which one side is common, and the other sides lie on one straight line.

We also know that the sum of adjacent angles is 180 °.

Let’s define x ° the adjacent angle from 120 ° angles.

We get the equation:

x + 120 = 180;

x = 180 – 120;

x = 60 ° is an angle adjacent to an angle of 120 °.