Question

ans thus Questions and explain​

Answer 1

Answer:

 sum of all angles = 360°

a)

a° + 67° + 52° + 135° = 360°

a° + 254° =  360°

a° = 360° - 254°

a° = 106°

b) 5b° + 4b° + 3b° = 360°

    12b° = 360°

   b° = 360°/12

   b° = 40°

c)  16c° + 4c° + 4c° + 90° = 360°

    24c° = 360° - 90°

   24c° = 270°

    c°  = 270°/24  = 135/12

         c°= 45/4

d)  7d + 23 + 139 + 6d + 5d = 360°

       18d + 162 = 360°

       18d = 360° - 162°

       18d = 198

       d = 198/18

       d = 11°