Question

i) The measures of angles of a triangle are x0 , ( x - 20)0 and ( x - 40)0, find x.​

Answer 1

Answer: her is ur answer

Step-by-step explanation:

Or,X°+(x-20°)+(x-40)°=180( sum of interior

angles of triangle is 180°)

Or,3x-60°=180°

Or,3(x+20°)=180°

Or,x+20°=60°

Therefore, x=40°

Answer 2

The Answer of the question is 80

Explanation

The measures of the three angles of the triangle is 180°

x0 + {x-20}0 + {x-40}0=180

Neglecting All zeros and removing all brackets

x+x-20+x-40 = 180

{x+x+x} + {-20 + -40}= 180 __(combine like terms )

3x+-60 =180

3x-60=180

3x= 180+60

3x = 240

3x/ 3 = 240/3

• x=80.