One of the adjacent angles is 27 °. Find the corner adjacent to it.

From the condition, we know that there are two adjacent corners. The degree measure of one of them is also known and it is equal to 27 °.

To find the degree measure of the second angle, we first of all recall the properties of angles that are adjacent to each other.

The theorem says that the sum of adjacent angles = 180 °.

We introduce a variable x ° with which we denote the degree measure of the second corner adjacent to the first.

We get a linear equation:

x + 27 = 180;

We find the variable as an unknown term:

x = 180 – 27;

x = 153 ° adjacent angle to 27 ° angle.

Answer: 153 ° second angle.