How to find degree in a triangle

A triangle 's interior angles typically add up to 180 ° when a triangle 's outer angles are equal to the sum of the two inner angles that are not adjacent to it. Subtracting the angle of the vertex of interest from 180 ° is another way to measure the exterior angle of a triangle.

If we add all three angles in any triangle we get 180 degrees. So, the measure of angle A + angle B + angle C = 180 degrees. This is true for any triangle in the world of geometry. We can use this idea to find the measure of angle(s) where the degree measure is missing or not given.

Step-by-step explanation:

1) is right

step-by-step explanation:

step-by-step explanation:

we are given

since, we have to isolate x on anyone side

so, we can move all x terms on one side

subtract both sides by 2x

add both sides by 9

divide both sides by 4

we get