Question

Va rog repede ,as vrea sa imi si explicati​

Answer 1

Răspuns:

Explicație pas cu pas:

∡A+B+C+D =360°

∡C =2B/3

∡D=B/6

∡A =5C/4  ;   A=5/4 *2B/3 =10B/12 =5B/6

5B/6 + B +2B/3 + B/6 =360°  numitor 6

5B+6B+4B+B =2160

16B =2160

B =135°

C=2*135/3 =90°

D=135/6 =22°30'

A =5*135/6 =112°30'