Question

Draw any line segment $PQ$ without measuring $PQ$ construct a copy of $PQ$.

Answer 1

Step 1. Consider the line segment $PQ$.

Step 2. Make a line $l$ and mark a point $A$ on it.

Step 3. On line $l$, locate point $B$.

Measure $PQ$ with a compass. With the same measure from $A$,

, draw an arc on line $l$ and mark the point of intersection as $B$

$AB=PQ$

So $AB$ is the required line segment.