Question

We draw a line segment $PQ$ of length $5cm$. We take an external point $A$ of line segment. Let us draw paralel line through the point A to line segment PQ.

Answer 1

Steps of construction:
1. We draw a line segment $PQ$ of length $5cm$.
2. We take an external point A of line segment.
3. Draw an arc from A that intersects $PQ$ at two different points $B$ and $C$.
4. Draw perpendicular bisector of $BC$. It passes through A.
5. Draw perpendicular of this line through $A$.
6. This line is parallel to PQ.