Classify the following triangle on the bases of sides

(i) PQ = 5 cm, PR = 6 cm and QR = 7 cm

     PQ ≠ PR ≠ QR

     Thus, ∆PQR is a scalene triangle.

(ii) AB = 4 cm, AC = 4 cm

      AB = AC

     Thus, ∆ABC is an isosceles triangle.

(iii) MN = 3 cm, ML = 3 cm and NL = 3 cm

       MN = ML = NL

       Thus, ∆MNL is an equilateral triangle.