tolong itu gimana siih???

<ABC = 180 - <BAD
          = 180 - (45 + 26)
          = 109°

<EBC = 109 - 29
          = 80°
 
<BDC = <ABD = 29° karena sudut bersebrangan
<ADB = <EBC = 80° karena sudut bersebrangan