Marcello is constructing the perpendicular bisector of ab¯¯¯¯¯. he has already constructed arcs as shown. what should marcello do for his next step? a) place the point of the compass on point x and draw an arc, using ay as the width for the opening of the compass. b) use the straightedge to draw a line through points x and y. c) use the straightedge to draw ax←→ and ay←→. d) place the point of the compass on point x and draw an arc, using ax as the width for the opening of the compass.

"Use the straightedge to draw a line through points X and Y." is the right answer.

Step-by-step explanation:

To perpendicular bisector of line segment AB. There are following steps:

1) Draw arcs from points A and B on the both sides of AB.

2) Name the intersection points as X and Y.

3) Use the straightedge to draw a line through points X and Y.

4) Name the point as O

hence we have construct perpendicular bisector XY of AB which bisects at O.

I believe it is a good representation because it shows the differences in the heights to the weights.