Question

The measures of angles of a triangle
x ,(x-20), (x - 400)
find the measure of each angles​

Answer 1

Explanation:

Sum of three angles of a triangle is 180°.

So,

x + (x-20) + (x-40) = 180

x + x - 20 + x - 40 = 180

x + x + x = 180 + 20 + 40

3x = 240

x= 240/3

x = 80

The measure of the angles are:

x = 80°

(x-20)° = (80-20)°=60°

(x-40)°= (80-40)° = 40°