One of the adjacent corners is 0.4 of the other. Find adjacent corners

To find the degree measure of angles, we will compose and solve equations.

But first of all, let’s see what we know from the problem statement.

The condition says that one of the adjacent angles is 0.4 of the other angle.

So, we know that the corners are adjacent. We also know that the sum of adjacent angles is 180 °.

Let us denote by the variable x the degree measure of one angle. Then the degree measure of the second angle is 0.4x.

x + 0.4x = 180;

x (1 + 0.4) = 180;

1.4x = 180;

x = 180: 1.4;

x = 129 ° one angle and 129 * 0.4 = 51 ° second angle.