If a, b, c are lengths of the sides of a triangle then,

1. a - b > c

2. c > a + b

3. c = a + b

4. c < a + b

It is not possible to construct a triangle when the lengths of its sides are

1. 6 cm, 7 cm, 8 cm

2. 4 cm, 6 cm, 6 cm

3. 5.3 cm, 2.2 cm, 3.1 cm

4. 9.3 cm, 5.2 cm, 7.4 cm

If triangle PQR is right angled at Q, then

1. PR = PQ

2. PR < PQ

3. PR < QR

4. PR > PQ

If triangle ABC is obtuse angled and ∠C is obtuse, then

1. AB > BC

2. AB = BC

3. AB < BC

4. AC > AB