1.

The perimeter of a triangle formed by the points (0,0), (1,0)and (0, 1) is …………….units. A) √2 B) 2 + √2 C) 2 – √2 D) 2 √2

Answer»

Correct option is (B) 2 + √2

Given vertices of triangle are \(A(0,0),B(1,0)\;and\;C(0,1).\)

\(\therefore\) \(AB=\sqrt{(1-0)^2+(0-0)^2}\)

\(=\sqrt{1+0}\)

= 1 units,

\(BC=\sqrt{(0-1)^2+(1-0)^2}\)

\(=\sqrt{1+1}\)

= \(\sqrt2\) units

and \(AC=\sqrt{(0-0)^2+(1-0)^2}\)

\(=\sqrt{0+1}\)

= 1 units

\(\therefore\) Perimeter of formed triangle ABC \(=AB+BC+AC\)

\(=(1+\sqrt2+1)\) units

\(=2+\sqrt2\) units

Correct option is B) 2 + √2



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