Question

If 2 sides of triangle are 7 cm and 5 cm , then the third side of triangle will always be less than _____ .

Answer 1

We know,
Sum of 2 sides of a triangle is always more than the third side
So,
7cm + 5 cm > third side
$\Rightarrow 12\text{cm > third side}$
Or, we can say
Third side < 12 cm
So, third side of triangle will always be less than 12 cm.