Question

1. constructing a perpendicular bisector for a given segment ab involves: drawing two arcs with a and b as centers that intersect drawing an arc with a as center that intersects b drawing an arc with b as center that intersects a drawing a line from a to b

Explanation:

To construct a perpendicular bisector of a line - segment AB, we draw two arcs with A and B as centers (using the same radius) such that they intersect. The line joining the intersection points of these arcs is the perpendicular bisector of AB. The other options do not describe the correct construction steps.

Answer:

Drawing two arcs with A and B as centers that intersect