Which side lengths could be used to form a triangle?
10 cm, 20 cm, 10 cm
1 cm, 2 cm, 5 cm
14 cm, 8 cm, 5 cm
6 cm, 2 cm, 7 cm
10 cm, 20 cm, 10 cm
1 cm, 2 cm, 5 cm
14 cm, 8 cm, 5 cm
6 cm, 2 cm, 7 cm