Question

the angles of of a triangle are 4x° , (2x + 30)° and
(5x - 15)° . find the angles and then show that the triangle is an equivalent triangle ​

Answer 1

Step-by-step explanation:

sum of all angles of a triangle= 180

4x+2x+30+5x-15= 180

11x+15=180

11x=165

x=165/11

x=15

The angles are:

4x=4(15)=60°

2x+30=2(15)+30=30+30=60°

5x-15=5(15)-15=75-15=60°

all the three angles are 60°

Therefore, the triangle is a equilateral triangle