# In a triangle, one angle is 30 degrees and the other 40. Find the third angle.

June 30, 2021 | education

| Find the third corner of the triangle if 2 angles of the triangle are known. The first angle is 30 degrees and the second angle is 40 degrees.

In a triangle, the sum of all angles is 1802 degrees.

Let x be the third angle.

Let’s make an equation and find the third angle.

30 + 40 + x = 180;

70 + x = 180;

x = 180 – 70;

x = 100 + 80 – 70;

x = 100 + 10;

x = 110;

This means that the third angle is 110 degrees.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.