Răspuns :
DM=MN=NC=12/3=4
arie dreptunghi
A(ABCD)=12×8=96 cm²
arie triunghiu
A(AMB)=12×8/2=48 cm²
arie trapez
A(ABNM)=(4+12)×8/2=64 cm²
arie paralelopgram
A(APNM)=4×8=32 cm²
arie triunghi
A(BMB)=4×8/2=16 cm²
A(ABMD)=(4+12)×8/2=64 cm²
arie dreptunghi
A(ABCD)=12×8=96 cm²
arie triunghiu
A(AMB)=12×8/2=48 cm²
arie trapez
A(ABNM)=(4+12)×8/2=64 cm²
arie paralelopgram
A(APNM)=4×8=32 cm²
arie triunghi
A(BMB)=4×8/2=16 cm²
A(ABMD)=(4+12)×8/2=64 cm²