Question

find the value of x ​

Answer 1

it is an isosceles ∆

the two inner angles are 180° - 9x

therefore by using angle sum property.og ∆,

6x + 180° - 9x + 180° - 9x = 180°

=> - 12x + 360° = 180°

=> -12x = -180°

=> x = -180/-12

=> x = 15