Question

Calculati masurile unghiurilor unui patrulater convex, stiind ca sunt direct proportionale cu 3,4,5 si 6

Answer 1

a+b+c+d=360
a,b,c,d d.p. 3,4,5,6 => a/3=b/4=c/5=d/6=k=> a=3k, b=4k, c=5k, d=6k

3k+4k+5k+6k=360=>18k=360=> k=20

a=3x20=60
b=4x20=80
c=5x20=100
d=6x20=120