Răspuns :
Răspuns:
CN=15cm
BN=24cm
Explicație pas cu pas:
DM/AM=5/8 |
MN || AB | => CN/BN=5/8 => | CN=5k
AB || CD | | BN=8k
CN+BN=5k+8k=13k=BC=39cm <=>
<=> k=39/13=3cm => | CN=15cm ; BN=24cm
Răspuns:
CN=15cm
BN=24cm
Explicație pas cu pas:
DM/AM=5/8 |
MN || AB | => CN/BN=5/8 => | CN=5k
AB || CD | | BN=8k
CN+BN=5k+8k=13k=BC=39cm <=>
<=> k=39/13=3cm => | CN=15cm ; BN=24cm