Andreeacostas160ask Andreeacostas160ask Matematică a fost răspuns Stabiliti daca punctele A, B, C sint coliniare, stiind ca a) AB=17cm, AC-3 dm, BC=13 cm b) AB=29cm, AC=420mm, BC=1,3 dm c) AB=4dm, AC=15mm, BC=38,5cm d) AB=48mm, AC=6cm, BC=12cm