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प्रश्न
Verify that the following points taken in order to form the vertices of a rhombus
A(1, 1), B(2, 1), C(2, 2) and D(1, 2)
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उत्तर
Distance = `sqrt((x_2 - x_1)^2 + (y_2 - y_1)^2`
AB = `sqrt((2 - 1)^2 + (1 - 1)^2`
= `sqrt((1)^2 + (0)^2`
= `sqrt(1)`
= 1
BC = `sqrt((2 - 2)^2 + (2 - 1)^2`
= `sqrt((0)^2 + (1)^2`
= `sqrt(1)`
= 1
CD = `sqrt((1 - 2)^2 + (2 - 2)^2`
= `sqrt((- 1)^2 + (0)^2`
= `sqrt(1)`
= 1
AD = `sqrt((1 - 1)^2 + (2 - 1)^2`
= `sqrt((0)^2 + (1)^2`
= `sqrt(1)`
= 1
AB = BC = CD = AD = 1.
All the four sides are equal.
∴ ABCD is a rhombus.
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