One of the corners of the parallelogram is 120 degrees. Find other angles of the parallelogram.

In order to find all the angles of a parallelogram, we will compose and solve an equation. Let’s start by looking at what is known from the condition. One of the angles of the parallelogram is 120 °.

There are two kinds of angles in a parallelogram:

1. opposing and they have the property – are equal to each other;

2. adjacent to one side – their sum is 180 °.

One pair of opposite angles equals 120 °.

Let’s denote the second angle by x °. Let’s make the equation

x + 120 = 180;

x = 180 – 120;

x = 60 ° second pair of parallelogram angles.