For an isosceles right angles triangle having each of equal sides ‘a’ , we have

I. Area =a^{2}

II. Perimeter = (2 +)a

III. Hypotenuse = 2a

Which of the following is true?

We know that,

Area of triangle =

=

=

Now, Hypotenuse =

=

=

Perimeter = a + a +

= 2a +

= a (2 + )

∴ I and II are true

Hence, option (c) is correct

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