Question

Q.8.The degree measures of three angles of a triangle are x, y and z, if z= (+) 2 , then find the value of z.​

Answer 1

Correct option is 6:7:8

The following ratios are

A) 2:3:4  

2 + 3 + 4 = 9  

9x = 180  

x =20  

angles 40, 60, 80 total = 180  

B) 3:4:5  

12x = 180  

x = 15

angles 45,60, 75 total is not 180 not a triangle  

C) 5:6:7  

18x = 180  

x = 10  

angle 50, 60, 70 total = 180  

D) 6:7:8  

21x = 180  

x = 8.5714  

angle 51.4285, 60, 68.5714 total = 179.9989