Jawabanmu

2014-05-29T16:18:47+07:00
<D = 180 - 110 - 30 = 40
<C = < A = 30
<BpC = 40 x 2 = 80

<ABE = 180 - 110 - 30 = 40
<CEB = 180 - 110 = 70
<EpB = 180 - 80 = 100
<EBp = 180 - 70 - 100 = 10

<ABP = <ABE + < EBp
          = 40 + 10
          = 50
jadi besar sudut ABP adalah 50 derajat