Question

Using only a compass and a straightedge you are constructing a line perpendicular to AB and passing through a given point M on AB with a compass of set width you have drawn arcs that intersect AB on each side of M and marked the two intersection points as P and Q the next step in this construction is to place the compass needle on

Answer 1

Answer: P and set its width beyond M.

Explanation:

Answer 2

P (or Q) and draw an arc in the approximate location of the reflection of M across AB.

Explanation:

Arcs drawn from P and Q in the approximate location of the reflection of M across AB will intersect at that point of reflection (M'). The line joining M and M' will be perpendicular to AB and through point M, as desired.