Question

Determinati masurile unghiurilor unui patrulater convex , stiind ca sunt direct proportionale cu numerele 1, 2, 5 si 4.

Answer 1

a+b+c+d =360 grade
4/1=b/2=c/5=d/4
a/1+b/2+c/5+d/4 =a+b+c+d/1+2+5+4 =360/12 =30
a/1=30  ;a=1*30 =30 grade
b/2 =30   ;b=2*30=60 grade
c/5 =30  ;  c=5*30 =150 grade
d/4 =30 ;  d=4*30 =120 grade
verif  ;  30+60+150+120 =360 grade