Question

Determinati masurile unghiurilor unui patrulater convex , stiind ca acestea sunt direct proportionale cu 5; 9; 10,si 12 .

Answer 1

unghiulA+B+C+D=360
A/5=B/9=C/10=D/12=K
A=5K
B=9K
C=10K
D=12K
5K+9K+10K+12K=360
36K=360
K=10
A=5X10=50
B=9X10=90
C=10X10=100
D=12X10=120