Răspunsuri

2014-08-28T13:39:25+03:00
 fie a,b, c, d unghiurile cautate. 
a,b,c,d dp 7,8,9,12⇒ a/7=b/8=c/9=d/12
⇒ a=7k,b=8k,c=9k,d=12k.

a+b+c+d=360
7k+8k+9k+12k=360
36k=360
k=360:36
k=10.

a=7
·10⇒a=70
b=8·10⇒b=80
c=9·10⇒c=90
d=12·10⇒d=120
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2014-08-28T13:57:30+03:00
A,b,c,d  -masurile unghiurilor

a,b,c,d   dp cu 7,8,9,12

a/7=b/8=c/9=d/12=k

a=7k
b=8k
c=9k
d=12k

7k+8k+9k+12k=360
36k=360

k=10

a=70
b=80
c=90
d=120
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