Răspuns:
Explicație pas cu pas:
ABCD- patrulater convex
Unghiul A,B,C,D d.p 3,5,7,9
A/supra3, B/supra5, C/supra7,D/supra9=k
A/supra3=k=A=3k
B/supra5=k=B=5k
C/supra7=k=C=7k
D/supra9=k=D=9k
Unghiul A+B+C+D= 360 GRADE
3k+5k+7k+9k=360 grade
24k= 360 grade
K= 360:24
K=15
A= 3•24= 72 grade
B=5•24= 120 grade
C=7•24= 168 grade
D=9•34= 216 grade
Success !
