Question

Kim is designing a railway track. Each point on the railway track should be equidistant from the two roads shown below.



Kim wrote the following steps to construct the railway track.

Step
Description
1
Adjust the compass to a medium width and place it at point B and draw an arc which cuts at point P and at point Q.
2
Adjust the compass to the width of and place it at point P and cut an arc.
3
Reduce the width of the compass and place it at point Q and draw an arc which intersects the previous arc at a point S.
4
Use a straightedge to connect the points B and S and extend i

Answer 1

Which is the first step that was done incorrectly?

Step 1, because the compass should be placed at points A and D.

Step 4, because the compass should be used to connect the points B and S.


Step 3, because the width of the compass should not be changed.

Step 2, because the width of the compass should not be so larg