Question

How to represent irrational number on number line?

Answer 1

We can plot other irrational numbers.
Any irrational number can be represented on number line for ex. $\sqrt{2}$
In an isoceles right angled triangle with sides 1, 1 and $\sqrt{2}$
$\therefore$ On number line draw $\perp$ unit along axis and then move $\perp$ unit along y - axis.

taking OB as radius draw an arc which intersects the x - axis at point OC represents $\sqrt{2}$