Question

An architect plans to make a drawing of the room of a house. The segment LM represents the ceiling of the room. He wants to construct a line passing through Q and perpendicular to side LM to represent a wall of the room. He uses a straightedge and compass to complete some steps of the construction, as shown below:

Answer 1

Fix the compass at Q and draw an arc below the line.
Fix the compass at L and draw an arc above the line.
Without changing the width and position of the compass, draw an arc between L and M. Without changing the width of the compass, place the compass at M and draw an arc.

Answer 2

@ganeshie8