Question

Fie patrulaterul convex DEFG. a)Aflati m(D) daca m(E)=119°,m(F)=65° si m( G)=87° : b) Aflati m( D) daca m(E)=102° 45` , m( F)=71° 25` si m( G)=83° 30` : c) Aflati lungimea diagonalei [ DF] daca P( DEFG)=114 cm, P( DGF)=73 cm si P( DEF)=85 cm: d) Aflati lungimea diagonalei [ DF] daca P( DEFG)=12,4 dm, P( DGF)=870 mm si P( DEF)=0,91 m:

Answer 1

a) m(D) = 360-119-65-87=89
b) m(D) = 360-102.45-71.25-83.30= 102.30