m 2 = 40°, m 4 = 150°, m 3 =
30
70
110
150
                                             
                                          
                                          
                                        
											 
											A theorem suggests that an exterior is equivalent to the sum of two remote angles, so angle 4 = angle 2 + and 3
150 = 40 + x
x = 110
m^3 = 110