Question

Find: 1) left angle2) right angle 3) top angle 4) bottom angle

Answer 1

x+16=4x-5

x-4x=-5-16

-3x=-21

x=7

α=β

x+16=7+16=23? as 4x-5 =x+16, then 4x-5 will be 23°

α+β+23+23=360

2α= 360-23-23

2α=360-46

2α=314

α= 157°