Ok so remember that a circle is 360 degrees and a line is 180 degrees so
IKJ ok so we see that we have a triangle to find the internal angles (which add to 180) we do, opposite angles are equal JIK=59 also CJI+KJI=180 so 132+KJI=180, KJI=48 so 59+48+IKJ=180 73=IKJ
HIB we can assume that AB is paralell to CD so therefor IJK=HIB=48 (from previous question)
EIJ is adding to EIH to get 180 EIJ+59=180 EIJ=121
