Point C is taken on the segment AB. It is known that AB = 9cm BC = 4cm. How long can a segment AC.

This problem is dressed to have two solutions – point C lies between points A and B, and point C lies behind point B.
1 case:
AC = AB + BC = 9 + 4 = 13 cm
2 case:
AC = AB – BC = 9 – 4 = 5 cm
Answer: 13 or 5 cm



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