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Se da:
ΔABC ≡ ΔA1 B1 C1
∡A,∡B,∡C - direct proportionale 2,4,3
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m(∡A1) , m(∡B1) , m(∡C1) -?


Răspuns :

A1/2 +B1/4+C1/3 =A+B+C/2+4+3 =180/9 =20

A1/2 =20  ;  A1 =2*20 =40 grade
B1/4 =20   ;  B1=2*40 =80   ""
C1 /3 =20  ;  C1 =3*20 =60 ''