Identify the triangles as equilateral, isosceles or scalene.

(i)
(ii)
(iii)
(iv)
(v)
(vi)

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Solution

(i) Here, AB = BC $\neq$ AC
Thus, it is an isosceles triangle.

(ii) Here, ED = EF = DF = 4 cm
Thus, it is an equilateral triangle.

(iii) Here, HG $\neq$ GJ $\neq$ HJ
Thus, it is a scalene triangle.

(iv) Here, KL = LN
Thus, it is an isosceles triangle.

(v) Here, MP $\neq$ QP $\neq$ MQ
Thus, it is a scalene triangle.

(vi) Here, RS = ST = RT
Thus, it is an equilateral triangle.

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