Question

calculate the value of y in each of the following figures—​

Answer 1

v)

⇒y+41+105+130=360  (sum of angles at any point makes a complete angle)

⇒y+276=360

⇒y=360-276

⇒y=84

vi)

⇒y+65+47+(y+8)+20=360

⇒y+y+8+65+47+20=360

⇒2y+8+65+47+20=360

⇒2y+140=360

⇒2y=360-140

⇒2y=220

⇒y=220/2

⇒y=110