Construct an equilateral triangle, given its side AB = 6 cm and justify the construction

Construct an equilateral triangle, given its side AB = 6 cm and justify the construction.

Given, length of equilateral side = 6 cm

Steps of construction
(i) First, draw a line segment BC = 6 cm.
(ii) Taking 6 and C as centre and radius 6 cm, draw
two arcs.
(iii) The arc of step (ii) cut any point A join the lines. AB and AC.
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