Question

URGENT!
55 PUNCTE ȘI COROANA
Explicati-mi pas cu pas cum se rezolva​

Answer 1

Răspuns:

m(B)=2m(A)/3

m(C)=m(A)/6

m(D)=1 intreg si 1/4=5/4=5m(B)/4

A+B+C+D=360

A+2A/3+A/6+5B/4=360

A+2A/3+A/6+5·2A/3·4=360

A+2A/3+A/6+5A/6=360  amplific        

6A+4A+A+5A=2160

16A=2160

A=2160:16=>A=135°

B=2·135:3=>B= 90°

C=135:6=22,5=22°si 30 min

D=5·135:6=112,5=112° si 30 min