One mark exercise problems I — task. Mathematics State Board, Class 8.

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1. If in a

$\triangle PQR$ ,

$PR^2 = PQ^2 + QR^2$ , then the right angle of

$\triangle PQR$ is at the vertex

2. If '

$l$ ' and '

$m$ ' are the legs and '

$n$ ' is the hypotenuse of a right angled triangle then,

$l^2 =$

3. If the sides of a triangle are in the ratio

$5 : 12 : 13$ then, it is

Answer variants:

$P$

$m^2 - n^2$

$n^2 - m^2$

a right angled triangle

$R$

$Q$

an isoscles triangle

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1. One mark exercise problems I