Data Handling — MATHS STD 6 — Question

$1.$ With $A$ and $B$ as centres and a radius greater than $AP$ construct two arcs, which cut each other at $Q$.
$2.$ Join $PQ$. Then $\overline{\text{PQ}}$ is perpendicular to $l$. We write $0$ $\overline{\text{PQ}}\perp\text{l}$
$3.$ With $P$ as centre and a convenient radius, construct an arc intersecting the line l at two points $A$ and $B$.
$4.$ Given a point $P$ on a line $l$