The two outer corners of the triangle are 120 ° and 160 °. what is the third outer corner of the triangle?

In order to find the value of the third outer angle of a triangle, we must first of all remember what the sum of all the outer angles of the triangle is equal to.

But first of all, let’s see what is given to us in the condition. So, we know that the two outer corners of the triangle are 120 ° and 160 °.

The sum of the outer angles of a triangle is 360 °. In order to find what the third outer angle of the triangle is equal to, we must subtract the sum of the other two angles of the triangle from 360 °.

Let’s calculate

360 ° – (120 ° + 160 °) = 360 ° – 280 ° = 80 °.