În ΔABC, se duce MN||BC, M∈[AB], N∈[AC]. Aflati:
![În ΔABC Se Duce MNBC MAB NAC Aflati class=](https://ro-static.z-dn.net/files/d62/87e6be779c4022fb2c00f1f1fd281550.png)
Răspuns:
Explicație pas cu pas:
a)
AM/MB=AN/NC
6/9= 4/NC
6NC= 9*4
6NC=36
NC= 36:6
NC= 6 cm
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b)
AM= 5
AB= 15
MB=15-5
MB=10
AM/MB= AN/NC
5/10=3/NC
5 NC= 30
NC=30:5
NC= 6cm
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c)
AM= 9-6
AM=3cm
AM/MB= AN/NC
3/6= NC/4
6NC= 12
NC= 12:6
NC= 2 cm