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:
Which of these is likely to be his next step in constructing the perpendicular line?
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.
Witho

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:
Which of these is likely to be his next step in constructing the perpendicular line?
 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.
 Witho