Q5 of 84 Page 114

Show that the following points form an equilateral triangle.

(√3, 2), (0,1) and (0, 3)

Formula used:


(√3, 2), (0, 1) and (0, 3)


Let the points be A (√3, 2), B (0, 1) and C (0, 3)


Distance of AB


AB = √ ((0 – √3)2 + (1 – 2)2)


AB = √ ((√3)2 + (–1)2)


AB = √ (3 + 1)


AB = √4


AB = 2


Distance of BC


B C= √ ((0 – 0)2 + (3 – 1)2)


BC = √ ((0)2 + (2)2)


BC = √ (0 + 4)


BC = √4


BC = 2


Distance of AC


AC = √ ((0 – √3)2 + (3 – 2))2)


AC = √ ((√3)2 + (1)2)


AC = √ (3 + 1)


AC = √ 4


AC = 2


AB = BC = AC = 2


Since, all the sides are equal the points form an equilateral triangle.


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