Respuesta :

geshu

Step-by-step explanation:

  1. <10=<12 (corresponding angles are equal) so, <10=74
  2. <8=<10 (alternative angles are equal) so, <8=74
  3. <8+<9=180 (sum of co-interior angles are 180) , 74+<9=180, <9=180-74 , so, <9=106
  4. <5+<12=180 (sum of co-interior angles are 180), <5+74=180, <5=180-74, so, <5=106
  5. <11=<9 (corresponding angles are equal ) so, <11=106
  6. <13=<11 (vertically opposite angles are equal) so, <13=106