In a triangle, the measures of the angles are x, 3x, and 5x. What is the measure of the largest angle?

Question

What is the measure of the largest angle?

Answer 1

For any triangle, the sum of the internal angles = 180 degrees.

 

So, x + 3x + 5x = 180

               9x = 180

                x = 20

The largest angle, 5x, is 100 degrees