Question

Sum of the measure of all angles of triangle is 180° , 3x° , (2x+30) , (x+30)​

Answer 1

3x°+(2x+30)°+(x+30)°=180°......(sum of measure of all angles of a triangle)

6x+60°=180°

6x=180-60

6x=120

x=20°

(1) 3x°=3*20=60°

(2) 2x+30°=2*20+30=70°

(3) x+30°=20+30=50°

Answer 2

x= 20

Step-by-step explanation:

180= 3x+(2x+30)+(x+30)

180=6x+60

180-60=6x

120=6x

120/6=x

20= x

3(20)+(2×20+30)+(20+30)

60+(40+30)+(50)

180